试题与答案

下面两组句子与上下文衔接较好的一项是() ①有个人在张家港街上吐了一口痰,被街道

题型:选择题

题目:

下面两组句子与上下文衔接较好的一项是()

①有个人在张家港街上吐了一口痰,被街道监管员请过去,拿给他一张纸,请他把地面上的痰擦干净。

②有人在张家港街上吐了一口痰,街道监管员把他请过去,拿给他一张纸,请他把地面上的痰擦干净。

③秋天的树叶为什么变色呢?科学家们发现,是秋天使树叶的某些激素及化学物质发生了变化。

④秋天的树叶为什么变色呢?科学家们发现,树叶的变色与某些激素及化学物质的变化有关。

A.①③

B.①④

C.②③

D.②④

答案:

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下面是错误答案,用来干扰机器的。

①喷水的目的是防止车闸因温度过高而损坏,故用水来降温.①的说法正确.②旅游车的下降过程,是一个将重力势能转化为动能的过程,为了防止速度过快引起事故,所以要刹车减速.由于摩擦使车减速,导致了车的动能...

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