题目内容

闭环环式供电要求两回路之间的连接设备开关性能不高，因此安全性常常不能可靠保障，常多采用开环方式。

A. 对
B. 错

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One of the greatest achievements of the later 20th century was a huge increase in life expectancy.

A. 一个最大的成就20世纪晚期是巨大的增长在寿命上。
B. 20世纪后期最伟大的成就之一就是人均寿命的大幅增长。

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Some of the reasons for this were the development of antibiotics, having a supply of clean water, having a better system for removing dirty water and the improvement in living standards.

A. 一些原因为了这个是抗生素的发展，干净水的供应，一个好的系统为了移除脏水和生活水平的提高。
B. 部分原因是抗生素的研发、净水供应以及更好的污水处理系统。同时生活水平也提高了。

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1Time-poverty syndromeThis health hazard is caused by trying to do too much in too little time. Many people feel that they are never in control of their lives. This can cause stress, depression and finally burnout.

A. 1 时间缺乏综合症这一健康危害是由于时间太少而事情太多造成的。许多人感到自己永远无法掌控生活，继而引发精神压力过重，萎靡不振，最终劳累过度。
B. 1 时间贫穷综合症这一健康危害是由于时间太少而事情太多造成的。许多人感到自己永远无法掌控生活，继而引发精神压力过重，萎靡不振，最终劳累过度。

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2 MultitaskingThe second health hazard is connected to the first one. Lots of people go out to work, look after their children, manage a home, do leisure activities and socialise. They have to do a lot of these things at the same time. They never find the time to stop for breath. This is called “multitasking” and it can be a danger to your health.

A. 2 多重任务处理第二大健康危害与上面讲的第一种危害紧密相关。许多人既要外出上班，又要照顾孩子，还得管家、休闲、社交。他们要在同一时间做很多此类事请。忙得几乎连喘息的时间都没有。这种现象被称之为“多重任务处理”，它可能对你的健康有害。
B. 2 多任务第二大健康危害与第一种危害紧密相关。许多人既要外出上班，又要照顾孩子，还得管家、休闲、社交，忙得几乎连喘息的时间都没有。这种现象被称之为“多重任务处理”，它可能对你的健康有害。

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闭环环式供电要求两回路之间的连接设备开关性能不高，因此安全性常常不能可靠保障，常多采用开环方式。

A. 对 B. 错

One of the greatest achievements of the later 20th century was a huge increase in life expectancy.

Some of the reasons for this were the development of antibiotics, having a supply of clean water, having a better system for removing dirty water and the improvement in living standards.

1Time-poverty syndromeThis health hazard is caused by trying to do too much in too little time. Many people feel that they are never in control of their lives. This can cause stress, depression and finally burnout.

A. 对
B. 错