第13题: [填空题]Hearing the bell ring, the students stopped (joke) _______with each other. 参考答案:joking 答案解析:该题考查动词用法。Stop to do something意为停下手边的事而开始做另外一件事。而stop doing something意为停止做某事。该句意为:听到铃响,学生们停止了相互开玩笑。
第24题: [单项选择]However, at times this balance in nature is ______ , resulting in a number of possibly un foreseen effects. A. troubled B. disturbed C. confused D. puzzled 参考答案:B 答案解析:[考点] 词义辨析。
[解析] 本题测试动词辨异。四个选项的意思分别为:A.troubled麻烦,困扰,打扰;B.disturbed打扰,打乱,打破;C.confused困惑,迷惑不解;D.puzz