The fact has worried many scientists ________the earth is becoming warmer and warmer these years.
A．whatB．whichC．thatD．whose
C

試題分析：句意：這些年地球變得越來越暖這個(gè)事實(shí)困擾著許多科學(xué)家們。這里是同位語從句，先行詞是fact，同位語從句中不缺少成分，that在從句中不做成分，故選C。
點(diǎn)評：本題難度適中。連詞是近幾年高考常考的語法項(xiàng)目，主要考查的是它們的用法及意義，還需正確理解句意及正確分析句子的成分才能做出正確的判斷。
即學(xué)即練：It is difficult to fill the minds of kids with the idea_______they must love study.
A. which        B. what      C. whether       D. that
解析：D。that引導(dǎo)同位語從句，解釋idea的具體內(nèi)容。
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