New medicines and instruments ______ every day to extend life.
A．developB．a(chǎn)re being developed
C．a(chǎn)re developingD．have developed
B
從語境上看，develop 不僅要用被動語態(tài)，而且要用進行時態(tài)。
練習冊系列答案
相關(guān)習題

科目：高中英語 來源：不詳 題型：單選題


.I know a little bit about Italy as my wife and I______ there several years ago.
A．a(chǎn)re goingB．had beenC．wentD．have been

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

People around the world are ______ the Japanese government to face the history with a correct attitude now.
A．a(chǎn)nswering for B．pushing forC．a(chǎn)ccounting for D．caring for

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

—Believe it or not! I should get my lost wallet back after I left it in the taxi this morning.
—Couldn’t agree more! You know, someone _______ it. There are still good persons in Chongqing.
A．can have takenB．might have taken
C．should have takenD．must have taken

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

______, your composition is full of mistakes.
A．Writing carelesslyB．Written carelessly
C．Having written carelesslyD．Being written carelessly

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

let’s go out now. It _____ any more.
A．didn’t rainB．doesn’t rainC．won’t rainD．isn’t raining

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題


6.I have to go to work by taxi because my car ____at the garage.
A．will be repairedB．is repaired
C．is being repairedD．has been repaired

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

When I got to the cinema, the film _____ for five minutes.
A．had begunB．has been on
C．has begunD．had been on

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

Tom ________ in the library every night over the last three months.(2011·北京)
A．worksB．worked
C．has been workingD．had been working

查看答案和解析>>

同步練習冊答案