【題目】Teenagers get less and less sleep, them at a higher risk of physical and mental health problems.

A. putting B. put

C. to put D. being put

【答案】A

【解析】考查非謂語(yǔ)動(dòng)詞。句意：青少年的睡眠越來越少，使他們面臨更大的身體和心理健康問題。句中Teenagers get less and less sleep和動(dòng)詞put是主動(dòng)關(guān)系，此處作結(jié)果狀語(yǔ)用現(xiàn)在分詞，故選A.

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