A lot of people could fall ill after drinking contaminated water.

A．muddied

B．polluted

C．mixed

D．troubled

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参考答案

本题考查动词。题干：很多人在饮用被污染的水之后生病了。contaminated是动词contaminate的过去分词，这里做形容词用，contaminated water“受到污染的水”，故和polluted同义。muddled water和troubled water都是“混浊的水”的意思。

1 The room is dim and quiet.

A．tiny

B．pleasant

C．dark

D．agreeable

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2 The index is the government's chief gauge of future economic activity.

A．measure

B．opinion

C．evaluation

D．decision

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3 It's prudent to start any exercise program gradually at first,

A．workable

B．sensible

C．possible

D．feasible

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