山東濰坊某實(shí)驗(yàn)高中2020年高一物理下學(xué)期期中試題及解析

1、28山東省濰坊市五縣市2019-2020學(xué)年高一物理下學(xué)期期中試題本試卷分第I卷（選擇題）和第II卷（非選擇題）兩部分，考試時間90分鐘，滿分100分。第I卷（選擇題 共40分）一、單項(xiàng)選擇題：本題共8小題，每小題3分，共24分。在每小題給出的四個選項(xiàng)中，只有 項(xiàng)是符合題目要求的。1.許多科學(xué)家在物理學(xué)的發(fā)展過程中作出了重要貢獻(xiàn)，下列敘述符合事實(shí)的是A.開普勒首先指出了行星繞太陽運(yùn)動的軌道不是圓，而是橢圓B.牛頓總結(jié)出了行星運(yùn)動的規(guī)律，發(fā)現(xiàn)了萬有引力定律C.天王星是人們根據(jù)萬有引力定律計(jì)算出其軌道后才發(fā)現(xiàn)的，被稱為“筆尖下發(fā)現(xiàn)的行星”D.牛頓第一次在實(shí)驗(yàn)室里測出了萬有引力常量2 . 一同學(xué)將質(zhì)

2、量為10kg垃圾桶從教學(xué)樓5樓提到1樓，此過程該同學(xué)對垃圾桶做的功約為A. 120J B . 1200J C . -120J D . -1200J3 .如圖甲所示，玻璃管豎直放置，當(dāng)紅蠟塊從玻璃管的最下端開始勻速上升的同時，使玻璃管水平向右勻加速運(yùn)動，直至紅蠟塊到達(dá)玻璃管的最上端。此過程紅蠟塊運(yùn)動的軌跡可能為乙圖中A. SB. RC. QD.以上三種情況都有可能4 .如圖所示，將質(zhì)量為 0.5kg的物體以一定的初速度水平拋出，飛行1s后垂直撞在傾角e為45°的斜面上，g取10m/s2。則物體與斜面相碰前的動能為B. 50JA. 25JC. 100JD. I00 J35 . 一顆質(zhì)量為

3、0.05kg的子彈以300m/s的速度打穿一塊厚度為5cm的木板后速度變?yōu)?00m/s,則子彈打穿木板的過程，木板對子彈的平均阻力為A. 2X103NB. 4X103NC. 2X104ND. 4X104N6 . 一個物體在相互垂直的兩個力Fi、F2的作用下，從靜止開始沿光滑水平面運(yùn)動一段距離，運(yùn)動過程中Fi對物體做功-6J , E對物體做功8J,則物體獲得的動能為A. -10J B . 2J C . 10J D . 14J7 .如圖所示，桌面高度為 h,質(zhì)量為m的小球，從離桌面高 H的A點(diǎn)處自由下落，落到地面上 的B點(diǎn)處，取桌面為零勢能面，小球可視為質(zhì)點(diǎn)。則下列說法正確的是A.小王在A處的重力

4、勢能為 mg (H+h)8 .小球在B處的重力勢能為0C.整個下落過程重力對小球做的功為mg (H+h)D.小球落到地面前瞬間重力的功率為mg 2g(H一h)28.我國自主建設(shè)的北斗衛(wèi)星導(dǎo)航系統(tǒng)由數(shù)十顆衛(wèi)星構(gòu)成，目前已向一帶一路沿線國家提供相關(guān)服務(wù)，若其中的兩顆人造衛(wèi)星甲和乙，它們的軌道近似為圓。已知甲的周期為12小時，乙的周期為16小時，則甲乙兩顆衛(wèi)星的2222A.線速度之比為33:43B.角速度之比為433322C.向心加速度之比為 93:16322D.向心力之比為163 :93二、多項(xiàng)選擇題：本題共4小題，共16分。在每小題給出的四個選項(xiàng)中有多項(xiàng)符合題目要求。全部選又的得4分，選對但不全

5、的得2分，有選錯的得0分。9 .如圖所示，一個圓盤繞過圓心 O且與盤面垂直的豎直軸勻速轉(zhuǎn)動，角速度為 a，盤面上有一 質(zhì)量為m的物塊隨圓盤一起轉(zhuǎn)動，物塊到轉(zhuǎn)軸的距離為 r,下列說法正確的是A.物塊做勻變速曲線運(yùn)動B.物塊所受的靜摩擦力方向始終指向圓心C.物塊需要的向心力大小為 mw r2D.物塊所受的靜摩擦力大小為mo 2r10 .探索精神是人類進(jìn)步的動力源泉。在向未知的宇宙探索過程中，有一宇宙飛船飛到了某行星附近，繞著該行星做勻速圓周運(yùn)動，該宇宙飛船相對于行星位置不變。測出宇宙飛船運(yùn)動的周期為T線速度大小為v,已知引力常量為 G,則下列正確的是工， vTA.該宇宙飛船的軌道半徑為 B.該行星

6、的質(zhì)量為v3T2G 3兀C.該行星的平均密度為GT2D.該行星表面的重力加速度為4兀 2v2 tT2兀11 .如圖所示，將一質(zhì)量為 m的擺球用長為L的細(xì)繩吊起，上端固定，使擺球在水平面內(nèi)做勻速圓周運(yùn)動，細(xì)繩就會沿圓錐面旋轉(zhuǎn)，這樣就構(gòu)成了一個圓錐擺。已知重力加速度為g,細(xì)繩與豎直方向的夾角為 e。下列說法中正確的是A.擺球受重力、拉力和向心力的作用D.擺線上的拉力大小為 3-12 .如圖所示，坐在雪橇上的人與雪橇的總質(zhì)量為 由靜止開始沿水平地面向右加速移動了一段距離m在與水平面成 e角的恒定拉力f作用下，1。已知雪橇與地面間的動摩擦因數(shù)為,則整個運(yùn)動過程中A.支持力做功為0B.拉力F做的功為Fl

7、cos 0C.摩擦力做的功為口( mg Fsin 0 )D.雪橇獲得的動能為Fl cos 9 -1 (mg Fsin 8 )三、非選擇題：本題共 6小題，共計(jì)60分。13. (6分)驗(yàn)證動能定理的實(shí)驗(yàn)裝置如圖所示，較長的小車的前端固定有力傳感器，能測出小 車所受的拉力，小車上固定兩個完全相同的遮光條A B,小車放在安裝有定滑輪和光電門的軌道D上,光電門可記錄遮光條 A、B通過它時的擋光時間。fll用不可伸長的細(xì)線將小車與質(zhì)量為m的重物相連，軌道放在水平桌面上，細(xì)線與軌道平行(滑輪質(zhì)量、 摩擦不計(jì))。實(shí)驗(yàn)主要步驟如下：測量小車、傳感器及遮光條的總質(zhì)量M遮光條的寬度d;按圖正確連接器材；由靜止釋放

8、小車，小車在細(xì)線拉動下運(yùn)動，記錄傳感器的示數(shù)F及遮光條的擋光時間tA、tB。(1)實(shí)驗(yàn)前用墊塊墊高軌道左端平衡摩擦力，若不掛重物，發(fā)現(xiàn)遮光條A、光時間tA>tB,則應(yīng)將墊塊向 (選填“左”或“右”)移動。(2)為驗(yàn)證動能定理還需要測量的物理量是： A.兩遮光條A、B間的距離LA、B經(jīng)過光電門B經(jīng)過光電門的擋B.重物的質(zhì)量mC.開始釋放時遮光片 A到光電門的距離s(3)驗(yàn)證動能定理是否成立需要驗(yàn)證的表達(dá)式為 (用所測物理量的符號表示)。14. (8分)在“探究平拋運(yùn)動規(guī)律”的實(shí)驗(yàn)中，某同學(xué)將斜槽固定在桌子邊緣，將貼有坐標(biāo)紙的方木板靠近斜槽固定，坐標(biāo)紙的橫線與小球出射方向平行。 正確調(diào)整后進(jìn)

9、行實(shí)驗(yàn)，讓小球從斜 槽上某一位置滾下，用頻閃照相機(jī)記錄小球在不同時刻的位置，如圖中a、b、c、d所示，用刻度尺測得方格紙每格邊長為 0.4m。(1)下列關(guān)于實(shí)驗(yàn)的說法正確的是 A.必須調(diào)節(jié)斜槽的末端切線沿水平方向B.小球在斜槽上的釋放高度影響相鄰點(diǎn)間高度之差的大小C.貼有方格紙的木板必須豎直固定D.位置a就是小球在槽末端的拋出點(diǎn)(2)本實(shí)驗(yàn)中頻閃照相機(jī)拍照的時間間隔為 s,小球平拋的初速度為 m/so(3)小球經(jīng)過a點(diǎn)時的速度大小為m/s 。15. (8分)某課外小組經(jīng)長期觀測某行星及其周圍的一顆衛(wèi)星，觀測發(fā)現(xiàn)，衛(wèi)星繞該行星做勻 速圓周運(yùn)動的軌道半徑為 r,周期為T,行星的半徑為 R。已知萬有

10、引力常量為 G求：(1)該行星的平均密度；(2)該行星的第一宇宙速度。16. (8分)跳臺滑雪軌道如圖所示，豎直面內(nèi)的圓形軌道最低點(diǎn)與斜坡軌道相接于B點(diǎn)，斜坡與水平方向夾角為 37。，斜坡足夠長。圓形軌道的圓心為O,半徑R=100m運(yùn)動員從圓軌道上的A點(diǎn)由靜止自由滑下， OA與OB夾角為37 量為m 60kg ,重力加速度為 g=10m/s： sin37 求運(yùn)動員：(1)到B點(diǎn)時對圓弧的壓力；(2)落到斜坡上時到 B點(diǎn)的距離。,運(yùn)動員從跳臺 B點(diǎn)水平飛出。已知運(yùn)動員的質(zhì)= 0.6,cos37° =0.8,不計(jì)一切摩擦和空氣阻力。17. （14 分 ） 電動機(jī)從很深的礦井中提升重物，重

11、物由靜止開始豎直向上做勻加速運(yùn)動，加速度大小為2m/s2,當(dāng)電動機(jī)輸出功率達(dá)到其允許輸出的最大值時，保持該功率不變。已知重物質(zhì)量為50kg,電動機(jī)最大輸出功率為6kw,取g=10m/s2。求：1 ）重物勻加速運(yùn)動的時間；2）勻加速階段電動機(jī)的平均功率；3）重物上升的最大速度。C,已知滑塊與水平軌道間的動摩擦因數(shù)為18. (16分)如圖所示，豎直平面內(nèi)半徑為 R=1.6m的光滑半圓形軌道 BC與水平軌道AB相連接,AB的長度為x=5.0m。一質(zhì)量為m=1kg的滑塊，在水平恒力 F作用下由靜止開始從 A向B運(yùn)動， 到B點(diǎn)時撤去力F,滑塊恰好沿圓軌道通過最高點(diǎn)尸0.3 ,求：(1)恒力F大??；(2)

12、滑塊從A到B運(yùn)動的時間；(3)滑塊從C點(diǎn)拋出后到落點(diǎn)的水平位移。20192020學(xué)年下學(xué)期期中考試高一物理試題答案2020.5一、單項(xiàng)選擇題：本題共8小題，每小題3分，共24分。在每小題給出的四個選項(xiàng)中，只有一 項(xiàng)是符合題目要求的。1. A 2. D 3. C 4. B 5. D 6. B 7. C 8. C二、多項(xiàng)選擇題：本題共4小題，共16分。在每小題給出的四個選項(xiàng)中有多項(xiàng)符合題目要求。全部選又的得4分，選對但不全的得 2分，有選錯的得 0分。9. BD 10. AB 11. CD 12. ABD三、非選擇題：本題共 6小題，共計(jì)60分。13. （1）左 （2） A （3） FL=，M U

13、-力 （每空 2 分）1 q rA14. （1） AC（2） 0.2 4（3） e （每空 2 分）15. 解：（1）設(shè)行星質(zhì)量為 M,衛(wèi)星質(zhì)量為 m,根據(jù)萬有引力提供向心力古葉各 （2分）M 厘（1 分）解得：p =合:（1分） r m中（2）該行星的第一宇宙速度為 v,誓=4 （2分）解得：”二孚 （2分）1 V K16. （1）下滑到B點(diǎn)的速度為v,從A到B由動能定理mffRl- COS37®）=尹v2 （1 分）在B點(diǎn)由向心力公式得： N 7ng=mJ （1分）解得：N=840N （1 分）由牛頓第三定律對軌道壓力大小為840N,方向豎直向下（2）落在斜面上到 B點(diǎn)距離為L,

14、水平方向：Lcos37°冠（1分）豎直方向： 閭“37。=三gF （1分）解得：L=75m （2分）17. 解：（1）勻加速運(yùn)動拉力為 F, F-mg=ma （2分）P=Fv（1 分）v=at（1 分）解得：t=5s（1分）h = -at1（2）該過程重物上升高度為 h,（1分）標(biāo)/由動能定理： Wmg=，（2分）W=Pt（1 分）解得：P=3kw（1分）（3）重物勻速上升時的速度最大，根據(jù)Pn=mgm （2分）解得：vm=12m/s（2分）18. （1）若恰好通過C點(diǎn)，則通過C點(diǎn)的速度為Vc（2分）Fx- urnffx - 2TngR = -mvi從A到C的過程由動能定理-&quo

15、t;（2分）解得：F=11N（2分）（2）從A到B運(yùn)動的加速度為a, F-判啊=（2分）由勻變速運(yùn)動規(guī)律：,二 （2分）解得： 飛（1分）（3）滑塊拋出后做平拋運(yùn)動，水平位移L=vc«（1分）豎直方向自由落體運(yùn)動：（2分）解得：L=3.2m（2 分）贈送：山東省濱州市2020屆高三英語第二次模擬考試試題及解析注言事項(xiàng)：1 .答卷前，考生務(wù)必將自己的姓名、考生號等填寫在答題卡和試卷指定位置上。改在本2 .回答選擇題時，選出每小題答案后，用鉛筆把答題卡對應(yīng)題目的答案標(biāo)號涂黑。如需動，用橡皮擦干凈后，再選涂其他答案標(biāo)號?；卮鸱沁x擇題時，將答案寫在答題卡上。寫 試卷上無效。第一部分 閱讀（共

16、兩節(jié)，滿分50 分）第一節(jié)（共15 小題；每小題 2. 5 分，滿分 37. 5 分） 閱讀下列短文，從每題所給的A、 B、 C和 D 四個選項(xiàng)中，選出最佳選項(xiàng)。ABeing stuck at home doesn't mean that learning stops. In fact, it s just theopposite. Here are some activities and resources to foster kids' imagination and build their curiosity at home.Let's Get Down to t

17、he ScienceThe science lab at school may be closed, but you can still put on goggles and a white lab coat and learn at home. This Test Tube Experiment Kit will make you feel like a genius in no time. Kids will get the chance to learn about basic chemistry, physics, and more by creating pop-resistant

18、bubbles, bouncy balls, and other objects.To Infinity （ 無窮） and BeyondEarth is a part of the Milky Waygalaxy, but did you know there are around 100 million galaxies in the universe? There are so many fun and fascinating things to learn about space that the possibilities truly go to infinity and beyon

19、d. A great way start your child's educational space adventure is with thisReal Life Sticker and Activity Book.Take a Walk on the Wild SideBiology class is in session! Here's your chance to get up close and personal with agreat white shark without putting on a wetsuit. This 4DGreat White Shar

20、k Anatomy Kit allows youto get an inside look at what makes these predators of the deep so powerful. And then take an even deeper dive into a shark's world withI Am Shark .Take advantage of this time at home and find new ways to keep exploring the world around you.1. What is common among these a

21、ctivities above?A. They are all performed outdoors.B. They are all associated with physics.C. They are all carried out by the way of experimenting.D. They all recommend some resources for kids to study.2. Which book favors children interested in stars?A. This Test Tube Experiment Kit.B. Real Life Sl

22、icker and Activity Book.C. 4D Great White Shark Anatomy Kit.D. I Am Shark .3. The shared goal of the activities is toB. save kids from boredomD. inspire kids to study at homeBA. gain financial benefitsC. explore new technologiesA first-year undergraduate student in Chengdu, recently complained onlin

23、e thather mother refused to raise her monthly allowance to 4,500yuan ( $ 633) even whenshe said her current allowance 2, 000yuan was not enough to cover her expenses,sparking a debate on how much money a college student needs per month. One. expert shares his views on the issue withChina Daily : Stu

24、dents should pursue education,not comfort.Even for a college student studying in a first-tier city in China, 2,000yuan isenough to cover all his or her monthly expenses. In fact, for a college student inChengdu a monthly allowance of 2,000 yuan is more than enough. According to a survey conducted by

25、 a bookkeeping platform, the average monthly expense for an undergraduate in cities other than Beijing, Shanghai and Hangzhou was less than 2, 000 yuan in 2019 ； for Chengdu, it was 1,900 yuan.Claiming that she can hardly afford new clothing and cosmetics with her 2,000 yuanmonthly allowance, the un

26、dergraduate student in Chengdu criticized her mother for refusing to raise her pocket money. Her "meager" allowance, she said, prevented her from buying branded goods that her hostel-mates enjoyed.By the time a person enters a college, she or he should have developed a healthy consumption

27、habit. And a youth should adjust her or his consumption according to her or his family income. On a deeper level, the money they spend in college should depend on how much they value their parents' hard work. Besides, some college students could take UP part-time jobs to meet their monetary need

28、s if they feel their parents don'tor can't send them enough money. In this way they can also learn to meet the requirements of life in the future and develop healthy consumption habits. More importantly, they should always bear in mind that education is their top priority in college4. What&#

29、39;s the expert's attitude to the issue about the undergraduate student?A. He was critical.B. He was neutral.C. He was supportive.D. He was unconcerned.5. In 2019, the undergraduates' average monthly expense in Hangzhou wasA. more than 2,000 B. 633 dollarsC. less than 2,000 yuanD.1,900 yuan6

30、. Which of the following best explains“meager” in paragraph 3?A. Empty.B. Pitiful.C. Mean.D. Fruitful.7. What does the last paragraph mainly talk about?A. College students should keep their expenses in line with their family conditions.B. College students consumption level is determined by their par

31、ents.C. College students should take up a part-time job to cover their expenses .D. College students should deal with their living expenses problems reasonably.CToday, China has conducted its first 3D printing experiment in space in a newly launched spacecraft, which was put into low-Earth orbit by

32、China's Long March 5B heavylift carrier rocket.Video broadcast on CCTV showed that the printer has printed a flat section of a honeycomb-shaped （蜂巢狀） structure as well as a symbol of China Aerospace Science and Technology Corp. , the parent company of the China Academy of Space Technology. The e

33、xperiment was done by a 3D printer, developed and built by its Beijing Spacecrafts Manufacturing Factory, inside the prototype of China's new generation manned spacecraft.The printer, named the Space-Based Composite Material 3D Printing System, uses carbon fiber-reinforced materials to autonomou

34、sly print objects. It is installed in the reentry module of the experimental spaceship, and will be brought back to Earth once the module returns.The printer features advanced technologies in material modeling, precision control and automation. Oncethe space-based 3D printing technology becomes oper

35、ationally ready, it can extensively benefit space programs as astronauts can use it to manufacture a lot of things they currently need to obtain from resupply flights by cargo spacecraft.WangYanan, editor-in-chief of the Aerospace Knowledgemagazine, said the 3D Printer will be very useful in extende

36、d space missions, such as those in a space station, because it will allow astronauts to make components quickly and conveniently in space. The technology will save future space journeys considerable resources and costs.In fact, the device is not the only representative of 3D printing onboard theProt

37、otypeA CubeSat deployer, designed and madethrough 3D printing by CoSats Space Technology,is also carried by the spacecraft to check the adaptability of 3D-printed equipment inspace. CoSats Chief Operating Officer Bai Ruixue said the 3D-Printed deployer is muchlighter and stronger than its counterpar

38、ts and it will have huge Potential in the space industry.8. What did the video broadcast on CCTV show to the audience?A. The process and the products of the 3D printing.B. The name and the shape of the 3D printer.C. The significance of the 3D printing technology.D. The relationship between the two c

39、ompanies.9. What if a component is broken in the space station now?A. It has to be sent by spaceship back to earth for repair.B. The astronauts can fix it conveniently by hand on the spot.C. The astronauts make one using 3D printing and replace it.D. It has to be unloaded and abandoned in space.10.

40、Why is the last paragraph mentioned?A. To introduce the CubeSat deployer produced in space.B. To explain the advantages of the 3D printing in space.C. To show the adaptability of 3D printing in space.D. To indicate a bright future of 3D printing in space.11. What can be a suitable title for the text

41、?A. 3D printing experiment conducted in space.B. 3D printing set to help ease space trips.C. 3D printing launched by Long March 5B.D. 3D printing a new way to explore space.DLego is considering a brick rental scheme in an attempt to cut down on plastic waste. The Danish toymaker has promised to make

42、 all its bricks from sustainable （可持續(xù)的） sources by 2030 and is ploughing significant resources into finding alternatives.Tim Brooks, vice-president responsible for sustainability, said the company was"totally open" to the idea of a product rental scheme but acknowledged that lost pieces co

43、uld cause a significant problem. He said the rental scheme was "possible" but admitted there were some "technical barriers", one of which is the complexity of some Lego kits （配套元件）， many of which contain thousands of pieces." What are the chances of giving them to an eight-y

44、ear-old child and getting them all back again? ” Mr Brooks added. "There is a lot of technical thinking that needs to be done.Weare right at beginning of that. ” Mr Brooks said Lego was exploring several ideas with a view to producing the highest value from products while consuming the least am

45、ount of re sources. He said many would "probably never see the light of day” and there wasno curr ent plan to try a rental scheme.Lego has come under increasing pressure to reduce its carbon footprint amid growing international alarm about the impact of plastic waste on the environment. It manu

46、factures 19 billion pieces per year 36,000 a minute that are made only of plastic while much of the internal packaging is also plastic.So far, the only breakthrough has been the development of a line of bricks made fromWe needplant-based plastic sourced from sugarcane. The green trees, plants and fl

47、owers were first included in Lego sets late last year but account for only one-two percent of the total amount of plastic elements produced. Henrik Ostergaard Nielson, a production supervisor in Lego's factory in Billund, told theNew York Times last yearto learn again how to do this ”12. How wil

48、l Lego cut down on plastic waste?A. By considering a brick rental scheme.B. By producing a new kind of toys instead of bricks.C. By replacing common plastic with a renewable material.D. By investing large amounts of money into market.13. What does Tim Brooks expect of the product rental scheme?A. It

49、'll cause certain serious problems.B. It'll be of great complexity.C It'll require more mature technical skills.D. It'll involve much more kits of bricks.14 What does the underlined word“many” in Paragraph 3 refer to?A. Ideas. B. Values.C. Products.D. Resources.15 What can be inferre

50、d from the passage?A. Lego has to explore a new product to earn a profit.B. A brick rental scheme has been put into mass production.C plant-abased plastic is environmentally friendly.D Lego is optimistic about the brick rental scheme.第二節(jié)（共5小題；每小題2. 5分，滿分12. 5分）根據(jù)短文內(nèi)容'從短文后的選項(xiàng)中選出能填入空白處的最佳選項(xiàng)。選項(xiàng)中有兩項(xiàng)

51、為多余選項(xiàng)。How much is a child's future success determined by born intelligence? Most guess around 25 percent, even 50 percent. 16 So if IQ is only a minor factor in success, what is it that separates the low earners from the high ones?Science doesn't have a definitive answer, although luck certa

52、inly plays a role. But another key factor is personality. Financial success was correlated with conscientiousness, a particular quality in your personality marked by diligence, perseverance and self-discipline.Grades at school and achievement-test results were markedly better predictors of adult suc

53、cess than raw IQ scores. 17 After all, don't they all measure the same thing? Not quite. Grades reflect not just intelligence but also " non-cognitive skills ", such as perseverance, good study habits and the ability to collaborate. Personality counts.18 A research suggests childhood i

54、nterventions（介入）can be helpful, and thatconscientiousness is more malleable （可塑的） than IQ. Opennessa broad quality that includes curiosity - is also connected to test scores and grades.19 Someone with an IQ of 70 isn't going to be able to do things that are easyfor a person with an IQ of 190. Bu

55、t many people fail to break into the job market because they lack skills that aren t measured on intelligence tests. They don't understand how to behave with kindness in job interviews. 20 Or on the job, they make it obvious they'll do no more than the minimum, if that.A. IQ still matters, o

56、f course.B. That might seem surprising.C. They may show up late or fail to dress properly.D. How much difference between people's incomes can be tied to IQ?E. But the data suggest a much smaller influence: about 1 or 2 percent.F. The higher the better for IQ, and perhaps for conscientiousness as

57、 well. G. Success depends not just on born ability but on skills that can be taught. 第二部分語言運(yùn)用（共兩節(jié)，滿分 30分） 第一節(jié)（共15小題；每小題1分，滿分15分）閱讀下面短文，從每題所給的A、R C和D四個選項(xiàng)中選出可以填入空白處的最佳選項(xiàng)。Ask people to name the world's tallest peak and anybody with sound general knowledge will name Mount Qomolangma. But quiz them on its exact 21 and many will be not sure.In 1975, Chinese surveyors 22 that Mount Qomolangma（ Mount