It is well known that biology is ______ science about living things.A．aB．theC．/D

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It is well known that biology is ______ science about living things.

A．a

B．the

C．/

D．an

答案

解析

选择A。science泛指时一般是不可数名词，当说具体某一门学科市场在前面加不定冠词。

举一反三

It is often said that _______ teachers have ______ very easy life.

A．不填;不填

B．不填;a

C．the;不填

D．the; a

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______recent report stated that the number of Spanish speakers in the U.S .would be higher than the number of English speaker by_____ year 2090.

A．the

B．A, /

C．The ,/

D．The, a

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___on-going division between English –speaking Canadians and French-speaking Canadians is _______major concern of the country.

A．The ,/

B．The ,a

C．An ,the

D．An,/

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When he left _____college ,he got a job as ______reporter in a newspaper office .
A. /, a B /, the C .a the D .the, the

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While he was investigating ways t improve the telescope Newton made _______discovery which completely changed ____ man’s understanding of color.

A．a ,/

B．a ,the

C．/, the

D．the ,a

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