题目内容

In Western countries, women are always dressed white their wedding day, because white is the colour of purity.

A. on; on B. in; in

C. on; in D. in; on

D

【解析】

试题分析:句意为:在西方国家,婚礼那一天,女人通常穿着白色的衣服,因为白色是纯洁的颜色。在英语中,“in+颜色”表示穿着某种颜色的衣服;此外,在具体的某一天或节假日常用介词on。结合选项可知应选D。

考点:考查介词用法辨析。

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If your pen broke at school today, what would you do? You would go to a shop and buy a new one. What if you could simply print out a real, working pen with your 3-D printer without leaving your room?

Ten years ago people could only see 3-D printing in science fiction(虚构的) movies. But now 3-D printing is here and it’s bringing big changes.

Unlike normal printing that can only copy a 2-D picture with ink(油墨),3-D printing can build almost anything made from material. The printer layers(分层) the material in different shapes to create the object you want to be copied.

The 3-D printer has been used to make many different things. People have made cups cars and even an airplane with it.

Doctors have been using 3-D printers for several years. People’s nervous systems (神经系统)have been printed out in 3-D form medical research. Some body parts have been printed and used in hospital. Several months ago, doctors used a 3-D printer to rebuild the face of a person who had a bad accident. In the future, it is expected(期待) that the printer will make human organs(器官) to save more lives.

However, there are drawbacks to the printer. At the moment, printing can be quite slow and it’s still rather expensive. The average(平均的) price of a household printer is around $1,700,not including the cost of the materials.

But as the technology develops, disadvantages will be improved. Only time will tell where this new technology will take us.

1.People could see 3-D printing in_________ten years ago.

A. large high school

B. science fiction movies

C. digital camera shop

2.People still can’t make a(n)________with a 3-D printer so far

A.airplane B.face C.organ

3.What does the underlined word “drawbacks” mean?

A.不足 B.趋势 C.优点

4.Which of the following is TRUE?

A.The normal printer can build 3-D objects you mant.

B.No nervous systems are printed out in 3-D form.

C.The 3-D printing can be cheaper and faster in the future

5.What’s the best title of the passage?

A.The disadvantages of 3-D printing

B.the changes brought by 3-D printing

C.The rapid development of science

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