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2．It has raised universal doubt ________the baby milk powder is safe in China after several baby cases ________ these days．（　　）

	A．	that； revealed		B．	whether； revealed
	C．	whether； being revealed		D．	that； to be revealed

分析最近幾起嬰幼兒毒奶粉案件被披露之后，大家對于在中國嬰幼兒奶粉的安全產(chǎn)生了普遍的質(zhì)疑．

解答答案：B．
本句為一主從復(fù)合句，doubt后面為一個同位語從句，當(dāng)doubt前面有否定詞時后面用that來引導(dǎo)，沒有否定詞時，后面用whether來引導(dǎo)，several baby cases與reveal之間為邏輯上的動賓關(guān)系，所以用過去分詞短語作后置定語，故選B．

點評注意doubt的特殊用法，另如：There is no doubt that the world is getting warmer．全球氣候正在變暖，這是肯定的．

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