长按下面二维码即可 |
长按下面二维码即可 |
1.单选题
[完成句子]In Britain, robot sales appropriately peaked in 1984, but have been declining ever since. This is partly because, British wage rates are too low to make robots financially attractive and partly because engineers now have more experience with robots and are more aware of the difficulties of introducing them effectively.
Robots are less popular in Britain today partly because __________.
A、too much energy
B、based on American designs
C、they are too costly
D、they are not reliable
正确答案:C
答案解析:本段第二句就是讲的两个原因,即人们的工资水平太低,也就是没有能力使机器人发挥出创造财富的作用,言下之意就是成本高。第二个原因就是人们逐渐意识到了操纵机器人不是件容易的事情,所以使用率就下降了。所以应该选C。
2.单选题
[概括大意]Our bodies are estimated to be about 60 to 70% water. Blood is mostly water, and our muscles, lungs, and brain all contain a lot of water. Water is needed to regulate body temperature and to provide the means for nutrients (滋养) to travel to all our organs. Water also transports oxygen to our cells, removes waste, and protects our joints and organs.
The main idea of this paragraph is__________.
A、Ounces of Water Needed Per Day
B、Importance of Water
C、Water in Our Body
D、The Function of Water
正确答案:B
答案解析:通过介绍水在我们身体里的含量、水存在身体的那些部位及水的一些功能来证明水的重要性。因此选择B。
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