---- An ant has two stomachs --- one for itself and the other for others.
----Really? Quite interesting. I ________ anything about it.
A．don’t knowB．hadn’t knownC．haven’t knownD．didn’t know
D
考查時態(tài)。“螞蟻有兩個胃，一個自己用一個為別的螞蟻�！薄罢娴拿�？我不知道�！痹趯υ挄r不知道，所以用一般過去時態(tài)。
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

--- Why don’t you ride your bicycle today?
--- Oh, it broke down. It ________ now.
A．is repairing B．is being repairedC．is repairedD．will repair

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

Every necessary means____ to protect milu deer which____ very valuable to us. As a result, the number of milu deer is increasing.
A．a(chǎn)re used; isB．is being used; is
C．have been used; areD．has been used; are

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

—Have you been to the United States?
—Yes, only once. I ________ there only for seven days.
A．stayedB．had stayedC．have stayedD．was staying

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

–Hi, Tom, You look tired.
--Yes, I _____________ the room all the afternoon.
A．paintedB．had paintedC．have paintedD．have been painting

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

Every few years, the coal workers                 their lungs X-rayed to ensure their health.
A．a(chǎn)re havingB．haveC．have hadD．had had

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

We are glad to hear that the Greens_________to a new flat next week.
A．movedB．movedC．will moveD．have moved

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

The football match will be put off ,if it______.
A．will rain B．rainsC．rainedD．is raining

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

—Could I use your dictionary?
—Sorry, it __________.
A．is usingB．was usingC．was usedD．is being used

查看答案和解析>>

同步練習冊答案