【題目】 The growing speed of a plant is influenced by a number of factors, _____ are beyond our control.

A. most of which B. most of them

C. most of what D. most of that

【答案】A

【解析】

試題分析：考查非限制性定語(yǔ)從句。句意：植物的生長(zhǎng)速度受大量因素的影響，其中的大多數(shù)是不受控制的。在非限制性定語(yǔ)從句只能用which，只有which可以在前面用介詞，這些是that所不能做到的，故選A項(xiàng)。

考點(diǎn) : 考查非限制性定語(yǔ)從句

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