10. ________ it is very late now， the students are still working in the lab.

　　A. As B. When C. If D. Although

　　as 因?yàn)?/P>

　　when 當(dāng)……時(shí)候

　　if 如果

　　although 盡管

　　答案 D

　　考試重點(diǎn)

　　連詞分為從屬連詞和并列連詞，從屬連詞用來連接各類從句，并列連詞用來表示并列句之間轉(zhuǎn)折、因果、并列、選擇、遞進(jìn)等關(guān)系�？忌鷳�(yīng)了解常見連詞的意思，根據(jù)句子上下文的需要進(jìn)行恰當(dāng)?shù)倪x擇。

　　1.The boy wanted to play football. _____， it was raining and he stayed at home.

　　A. And B. But C. So D. For

　　and(并且); but (但是);so (所以);for (因?yàn)?

　　答案 B

　　2.The couple have lived in China for five years， so they have got used to the life here.

　　3.I wonder if you have met my sister.(if 是否)

　　4.The research results show that the earth goes a little faster _______ it is closer to the sun.

　　A. as if B. so that C. than D. when

　　as if (仿佛);so that (以便，為了);so……that(如此……以至于);

　　than (連接比較級(jí));when (當(dāng)……時(shí)候)

　　答案 D

　　5.________ I havent seen the film， I know very little about it.

　　A. After B. Although C. As D. Before

　　after (在什么之后);although (盡管);as (因?yàn)?;before (在……之前)

　　because和so不能同時(shí)用 as和so不能連用

　　答案 C

　　編輯推薦：

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　　2011年成人高考(專升本)高等數(shù)學(xué)必背 資料匯總