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[单选题]

Sixty percent of the work _____?

A.have been done

B.had been done

C.has been done

D.has done

答案
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更多“Sixty percent of the work _____?”相关的问题

第1题

She has worked ______that body and face for more than sixty years.

A. for

B. on

C. to

D. with

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第2题

picked out with a good percent of accuracy by personality alone."______
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第3题

The price of such material was reduced__ .

A.by 18 percent

B.to 18 percent

C.at 18 percent

D.for 18 percent

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第4题

Theinternationalsituationisvery_______intheMiddleEast.

A.delicious

B.perfect

C.delicate

D.percent

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第5题

A. pursueB. permit C. persuade D. percent

A.pursue

B. permit

C. persuade

D. percent

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第6题

A particle stream has 33 weight percent particles with diameter 1μ, 33 percent with diameter 5μ, and

34 percent with diameter 10μ. We now pass thisstream through a cyclone whose efficiency is described by, withDCUT=5μ. What fraction by weight of the particles will the cyclone collect?

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第7题

Calculate the percent ionization in a 0.20 mol·L-1 solution of hydrofluoric acid, HF()。

Calculate the percent ionization in a 0.20 mol·L-1solution of hydrofluoric acid, HF()。

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第8题

The food price ______ by 10 percent during holiday.A.raiseB.roseC.aroseD.aroused

The food price ______ by 10 percent during holiday.

A.raise

B.rose

C.arose

D.aroused

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第9题

Don't promise anything______you are 100 percent sure.A.ifB.sinceC.unlessD.because

Don't promise anything______you are 100 percent sure.

A.if

B.since

C.unless

D.because

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第10题

Calculate the hydroxide ion concentration,the percent reaction,and the pH of a 0.050mol·L-1 solution

Calculate the hydroxide ion concentration,the percent reaction,and the pH of a 0.050mol·L-1solution of sodium acetate. (For acetic acid,).

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