【单选题】【消耗次数：1】
Nowadays people spend more time exercising to keep _____.(
①
fitly
②
fitting
③
fit
④
fiitted
参考答案：
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相关题目
【单选题】
Nowadays, many people suffer from _________ depression under the pressure of working.
①
acute
②
sharp
③
quick
④
cute
【单选题】
20. Its impossible for all the people to get jobs because ______ of them are not fit for them.
①
none
②
all
③
notall
④
everyone
【单选题】
The more people you know, ___________ knowledge you get.
①
the much
②
the more
③
more
④
much
【单选题】
The hours ___ the children spend in their one-way relationship withtelevision people undoubtedly affect their relationships with real-life people.
①
when
②
that
③
in which
④
on which
【单选题】
The hours _______ the children spend in their one-way relationship with television people undoubtedly affect their relationships with real-life people.
①
in which
②
on which
③
when
④
that
【单选题】
Translation : Parents are too busy to spend time teaching their kids right from wrong.
①
父母不会太忙，所以有时间教导孩子明辨是非。
②
父母都太忙，没有时间教导孩子明辨是非。
③
父母很忙，但是也抽时间教导孩子明辨是非。
④
父母很忙，经常抽时间教导孩子明辨是非。
【单选题】
People are spending more of their income on goods such as cars and household ________ .
①
facilities
②
appliances
③
instruments
④
equipment
随机题目
【判断题】
问：炔烃不但可以加一分子卤素，而且可以加两分子卤素，但却比烯烃加卤素困难，反应速率也小，为什么？ 解：烯烃、炔烃与卤素的加成反应是亲电加成，不饱和键上的电子云密度越大，越有利于亲电加成。由于炔烃中的叁键碳采取sp杂化，电负性较大。所以，炔烃与卤素加成时，比烯烃加卤素困难，反应速率也小于烯烃。评：解释合情合理！
①
正确
②
错误
【判断题】
在炔烃加水的反应中，先生成一个很不稳定的烯醇，烯醇很快转变为稳定的羰基化合物（酮式结构）。烯醇和羰基化合物是同分异构体，这种异构现象称为酮醇互变异构。
①
正确
②
错误