题目内容

This August, we’ll welcome guests from all over the world. Some of them follow their own special cultural traditions. It’s important for us to know about them.

◆In many countries, such as Thailand, India and Malaysia, people believe that the left hand is unclean. So, it’s not proper to use one’s left hand to hold food, touch others or pass objects, Doing so may offend certain guests.

◆Some Westerners may be offended if you touch them or their personal things-even by accident. If this happens, say sorry politely.

◆Some elderly Westerners may be offended if you try to help them without their agreement.

◆People think numbers can be lucky or unlucky. Some Westerners avoid the number 13 because they believe it is unlucky.

◆Muslims(穆斯林)do not eat pork, and words like pigs are not considered proper.

◆People from Brazil, Italy and Pakistan do not give handkerchiefs(手帕)as gifts. They believe a handkerchief is closely connected with unhappy feelings.

◆Wine is not sent as a gift in many parts of western and middle Asia, where most Muslims live.

1.Indians don’t hold food with the left hand because they consider it .

A. unclean B. useless

C. valueless D. unimportant

2. The word “offend” in the second paragraph(段落)might mean “ ”.

A. honor B. help C. hate D. hurt

3.Muslims do not .

A. send gifts B. eat pork

C. drink milk D. use handkerchiefs

4.Which of the following is true according to the passage?

A. People from Pakistan like to send handkerchiefs as gifts.

B. All the elderly people in the west like being helped by others.

C. The number 13 is thought to be unlucky by some Westerners.

D. Westerners do not mind their personal things being touched.

5.What does the passage mainly talk about?

A. Lucky numbers.

B. Traditional food.

C. Culture differences.

D. Hands and handkerchiefs.

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You’ve heard of 3D printing from newspaper and TV programs. It can “print” in plastic, metal, nylon, and over a hundred other materials. 3D printing technology has been around since the 1980s, it was not widely used until the early 2010s. The first working 3D printer was created in 1984 by Chuck Hull.

3D printers use many different types of technologies, but they all share one thing in common: they create a three-dimensional(维度的) object by building it layer(层), by continuing layer, until the whole object is completed. Imagine a baker lay down each layer one at a time until the whole cake is formed. 3D printing is somewhat similar, but just a bit stricter. How can 3D printers work so well? The most important thing-a program, a 3D printer also needs to have instructions for what to print from a computer. It needs a file as well. The file which is a Computer Aided Design (CAD) paper is created with the use of a 3D modeling program. The program creates a paper that is sent to the 3D printer. Along the way, software pieces the design into hundreds, or more likely thousands of layers. The 3D printer builds up one layer at a time, from the bottom to the top, until the object is done.

3D printings can be used for making many kinds of things such as machine parts, daily life objects, even human organs(器官) using a person's own cells.

Nowadays, Marc. Dillon founds a project which deals with many world famous paintings like Leonardo da Vinci’s Mona Lisa, Van Gogh’s Sunflower with 3D technology. This project helps the blind people enjoy the fantastic art through touching. In order to provide a good user experience, these 3D paintings have special instruments which can tell people what they touch.

1.The first working 3D printer was created in _________.

A. 1980 B. 1984 C. 2001 D. 2010

2.From Paragraph 2, we can know that_______________.

A. how a 3D printer works

B. what a 3D printing is

C. questions of a 3D printer

D. uses of a 3D printer

3.According to the passage, ___________can help the blind know what they touch.

A. CAD paper

B. Machine parts.

C. The world famous paintings

D. Special instruments

4.Which of the following is true?

A. 3D printers use 3 types of technologies.

B. 3D printers make printings from the top.

C. 3D printers work as a baker makes a cake.

D. 3D printers piece the design into a few layers.

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