题目内容

This is 3-D printer. And this is an artificial (人工的) ear. Can you believe that scientists printed this artificial ear by this 3-D printer?

A.
a
B.
an
C.
the
D.
/

A
冠词是一种虚词，一般用于名词前面表示特指或者泛指某一个。冠词的应用都用一定规则，熟记这些规则是解题的关键。不定冠词用在名词前，表示泛指任何一个。定冠词用在名词前表示特指某一个。在专有名词及表示泛指的复数名词前一般不要冠词，叫做零冠词。需注意的是不定冠词的用法是看词首音素，不是看首字母，如：useful首字母是元音，但是词首音素时辅音，故不定冠词用a；hour首字母是辅音，但是词首音素是元音，故用冠词an。句意:这是一台3D打印机.这是一只人工耳朵.你能相信科学家们用3D打印机打印了这只人工耳朵吗?结合语境可知本句中泛指的是任何一台3D打印机,故用不定冠词.three词首音素是辅音,故不定冠词,用a.选A.
考点：冠词

练习册系列答案

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【小题3】Which invention is most helpful for someone waiting for a train?

【小题4】If you want to know how your breath is. you may buy _.

【小题5】Who might use the Banana Suitcase?

A．A person who eats bananas only at home.

B．Someone who needs to throw away a banana.

C．A person who has little interest in eating bananas.

D．Someone who loves bananas and brings lunch to school every day.

A new supermarket put on a notice at the entrance. It said, "Remember, once a week, one ofour customers will get __ 41  goods. This may be your lucky day. " All the housewives_42  went to the supermarket wanted to be the lucky customer.
In the following several weeks, Mrs. Black _43__ didshopping in the same supermarket.Unlike many other customers, she never __44   hope. Her kitchen was full of things that she did not need. She dreamed of the __45__ when the manager of the supermarket would come and say to her. “Madam, this is your lucky day and __46__ in your basket is free."
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【小题7】A from B. on C.to D. for

【小题9】 A. him B. she C. hers D her

Where are they?

This is Tommy’s bedroom(卧室). You can see a small bed 55 the room. There’s a toy(玩具)on the bed. You can see a light（灯）on the drawer. 56 the photo? It’s on the drawer，too. You can see 57 on the chair. Where are the plants? They are 58 . The alarm clock, the pen and a cup 59 on the table. 60 you see a math book? Yes, it’s on the floor.

【小题6】A. Are B. Can C. Is D Need

In the world , football is the most popular sport. This is because many countries have wonderful teams for the World Cup. The World Cup is held every four years.
To remember 2002 FIFA World Cup, children from different countries and more than 60 children from Japanese schools came together and drew a big picture called “Dream World Cups ”for a few days in Japan .The children drew animals, flowers and people playing soccer under a blue bright sky. They wished each football team good luck by drawing the flags of all the countries that would take part in the World Cup in Japan and South Korea. The picture was put up in a park near a playground in Yokohama .Some football teams would have games there.
Are you a football fan？The World Cup makes more and more people interested in football Teenagers like playing and watching football .Many of them love some football stars so much that they get the pictures of their favourite players on the walls of their rooms. That is the way to show their love for the World Cup as children in Japan.
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