精英家教網 > 高中英語 > 題目詳情

Scientific experiments __________ by students without the teachers’ instructions can be dangerous.
A．carry outB．carrying outC．carried outD．carrying
C
考查非謂語動詞experiments與carry out為動賓關系要用過去分詞作定語。句意：學生沒有老師指導做科學實驗有可能有危險。
練習冊系列答案
相關習題

科目：高中英語 來源：不詳 題型：單選題

Look at these clouds. ______.
A．It’ll rainB．It’s going to rainC．It’ll be rainingD．It is to rain

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

Mr. Johnson, together with his wife and two daughters, ____ to arrive on the evening flight.
A．are going B．are C．will be D．is going

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題


. —We’re going to Paris for Sylvia’s birthday. But it’s a secret.
—Is it? OK, I________ her.
A．am not going to tellB．will not tellC．haven’t toldD．am not telling

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

Isn't it lovely to think that I   ______    myself on the sunny beach tomorrow at this time？
A．will enjoyB．am enjoyingC．will be enjoyingD．shall enjoy

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

Please be sure to telephone me next time you         to our city .
A．will comeB．come C．cameD．are coming

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題


—Clover, why didn’t you attend the meeting yesterday?
—I ____, but something unexpected happened．
A．hadB．wouldC．was going toD．did

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題


While you are enjoying yourself in Beijing this time tomorrow, I __my mother do housework at home.
A．am helpingB．will helpC．would helpD．will be helping

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

The house was very quiet when I got home. All my family       to bed
A．have goneB．were goingC．had goneD．would go

查看答案和解析>>

同步練習冊答案