13．         all the students are here．why don't we start our class meeting right now？（　�。�
A．AlthoughB．WhenC．SinceD．Before'

分析 既然所有的學(xué)生都在這里，為什么不馬上開(kāi)始我們的班會(huì)呢？

解答 答案：C；
根據(jù)后面的"為什么不馬上開(kāi)始我們的班會(huì)呢？"可以推測(cè)前半句表達(dá)的意思是"既然所有的學(xué)生都在這里"，設(shè)空處句子表示原因，用since"既然"引導(dǎo)原因狀語(yǔ)從句；故選C

點(diǎn)評(píng) 本題主要考查連詞的用法，做此類(lèi)題目一定要弄清句意，明白上下文之間的關(guān)系，才能更好地判斷出所要用的連詞．再就是要熟記固定短語(yǔ)和句型．

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