The calculations, had they been done by hand, ______all practical value by the time they were finished.

A．had lost B．would lose C．should have lost D．would have lost

D

解析試題分析:句意：這些計算如果用手工進行的話，那么當他們完成后將失去所有的實際價值。句中had they been done是if they had been done的省略，是對過去的虛擬，所以主句謂語應該用would have done，選D。
考點：考查動詞時態(tài)。

練習冊系列答案
相關習題

科目：高中英語 來源： 題型：單選題

-The frightening black clouds are gathering .lt______.
-Sure Let's go indoors,

A． is to rainB． rainsC． is going to rainD． is raining

查看答案和解析>>

科目：高中英語 來源： 題型：單選題

Take care! Don’t drop ink on your shirt, for it _______ easily.

A．won’t wash outB．won’t be washed out
C．isn’t washed outD．isn’t washing out

查看答案和解析>>

科目：高中英語 來源： 題型：單選題

Although her disease      her eyesight and forced her to leave the dance floor, she refuses to fall into self-pity.

A．has affected B．a(chǎn)ffected C．a(chǎn)ffects D．had affected

查看答案和解析>>

科目：高中英語 來源： 題型：單選題

Some so-called climate travelers _______ in one place for a few months and then move on to some other places as the weather changes.

A．have stayed B．a(chǎn)re staying C．stay D．stayed

查看答案和解析>>

科目：高中英語 來源： 題型：單選題

----I thought I asked you to fix the radio.
----Oh, I am sorry. I ______ it right away.

A．a(chǎn)m to do B．will do C．was about to do D．a(chǎn)m going to do

查看答案和解析>>

科目：高中英語 來源： 題型：單選題

I have to see the doctor this afternoon because I ____ a lot lately.

A．have been coughingB．had coughedC．coughedD．cough

查看答案和解析>>

科目：高中英語 來源： 題型：單選題

Don’t take his remarks too seriously. He was so sad that I don’t think he really _________ what he was saying.

A．knewB．knowsC．was knowingD．had known

查看答案和解析>>

科目：高中英語 來源： 題型：單選題

--- Did you tell Julia about the result?    ---Oh, no, I forgot. I _____ her now.

A．will be callingB．callC．will callD．a(chǎn)m to call

查看答案和解析>>

同步練習冊答案