精英家教網 > 高中英語 > 題目詳情
18．-where is Tom？He is nowhere to be found．
-I'm not sure，but he _____ have gone to meet Lucy，because Lucy called him earlier．（　�。�
A．mustB．shouldC．mightD．can

分析 --Tom在哪？到處都找不到他．
--我不確定，但是他有可能去見Lucy了，因為Lucy早些時候打電話給他．

解答 答案：C
解析：A：必須；一定；B：應該；C：可能；或許；D：可能．根據前面的"我不確定"可知Tom"可能"去見Lucy了，故本題答案為C選項．注意：can表示推測時一般用于否定句和疑問句，故本題不能選擇D選項．

點評 本題考查情態(tài)動詞，做此類題目時一定要分析每個選項中情態(tài)動詞的含義及其用法，再結合原文及句意確定最終的答案．

練習冊系列答案
相關習題

科目：高中英語 來源： 題型：選擇題

8．It has been announced that all the students __________ put on masks （口罩） before going to school in case they are infected with bird flu virus．（　　）
A．shallB．willC．needD．may

查看答案和解析>>

科目：高中英語 來源： 題型：選擇題

9．Malaysia Airlines Flight 370 ___________ course and turned back toward Kuala Lumpur--but there were no indications from the pilot that he was doing so．（　�。�
A．must have changedB．could have changed
C．might have changedD．should have changed．

查看答案和解析>>

科目：高中英語 來源： 題型：填空題

6．We all know that computers are more and more useful in our everyday life．
As is known to all，computers are more and more useful in our everyday life．

查看答案和解析>>

科目：高中英語 來源： 題型：選擇題

13．________ Yao Ming has retired from the NBA，the pleasure we have got by watching him play basketball at home and abroad will last long．（　�。�
A．WhileB．WhenC．AsD．Since

查看答案和解析>>

科目：高中英語 來源： 題型：選擇題

3．"We must stress that history cannot be overturned，      or forgotten．Chinese people，Asian people and the world at large should be highly alert to the ambitions of the Japanese right-wingers，"Hong said．（　�。�
A．deniedB．rejectC．refuseD．acquire

查看答案和解析>>

科目：高中英語 來源： 題型：選擇題

10．The medicine is on sale everywhere．You can get it at _______ chemist's．（　�。�
A．otherB．someC．anotherD．any

查看答案和解析>>

科目：高中英語 來源： 題型：閱讀理解

7．Ladies and gentlemen，say hello to PIBOT．Developed in South Korea，this little machine is about the size of a child's toy，and has a head that kind of looks like a toaster （烤箱）．It's also able to fly a plane．
      The researchers responsible for the robot's development have actually managed to program it with all the knowledge and skills necessary to operate a standard airplane．Through a built-in webcam （網絡攝像機），PIBOT is able to gather information about its surroundings-such as location，airspeed，and weather conditions．
       With all of this information，it's able to make decisions in much the same way as a human pilot would．It's already completed one successful test flight-sort of．In the video presented at IROS 2014 in Chicago，PIBOT was seen guiding the airplane through a short test flight in a flight simulator （模擬器）-a process which included both takeoff and landing．
       It's super cool．
      Now，it's worth mentioning that-even as impressive as PIBOT is-we aren't going to be seeing it in any real airplanes at any point in the near future．Although the little robot is certainly able to operate a plane，it doesn't quite have the skills necessary to address some of the real world situations met by pilots-such as bad weather or mix-ups on the runway．It doesn't meet the government's rules，either．
      The inventors aren't terribly discouraged，however．They expect that it's only a matter of time before they manage to get PIBOT up to the necessary standards．When the day comes，we might see airlines put to work a whole new type of pilot； one who never tires，never gets hungry，and never makes mistakes．
      So…if you've a career in aviation （航空），it might soon be time to start planning for retirement （退休）．
28．We know from the text that PIBOTA．
A．is designed to operate a plane      
B．can serve as a toaster
C．was developed in Chicago            
D．is very large  
29．In the presented video，PIBOTD．
A．competed with a human pilot
B．completed several test flights
C．made decisions totally like humans
D．successfully guided a plane to take off and land
30．Why won't PIBOT be put into use？C
A．It can't predict weather conditions．
B．It doesn't have the skills to operate a plane．
C．It can't deal with real world situations．
D．It can't gather information abo ut its surroundings．
31．It can be learned from the text thatB．
A．PIBOT won't make any mistake in a flight
B．the inventors are confident about the future of PIBO．
C．the researchers will have to abandon the plan
D．PIBOT will surely replace human pilots one day．

查看答案和解析>>

科目：高中英語 來源： 題型：填空題

8．Many social services are still provided byvoluntary（志愿的） societies in our city．

查看答案和解析>>

同步練習冊答案