People cut down too many trees, _____ the greenhouse effect becomes more and more serious.
A.soB.becauseC.a(chǎn)lthoughD.if
A

試題分析:so 因此;because 因?yàn)椋籥lthough雖然,盡管; if是否,如果。句意:人們砍伐了太多的樹木,因此溫室效應(yīng)變得越來越嚴(yán)重。結(jié)合語境可知選A。
點(diǎn)評(píng):連詞在句子中主要起聯(lián)系上下文的作用,他們之間的區(qū)別就是表示邏輯關(guān)系的不同,所以在解題時(shí)先要理解上下文含義,然后根據(jù)上下文邏輯關(guān)系選擇合適的連詞。連詞的用法都比較多,語義之間還有交叉,熟記其基本應(yīng)用規(guī)則,了解其區(qū)別,注意固定搭配對(duì)象,是做好此類題型的關(guān)鍵。
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