问题 选择题
在探究电磁铁的实验中,小明利用相同规格的大铁钉和漆包线自制了两个匝数不同的线圈,连接电路如图所示.闭合开关,调整变阻器滑片使电流保持不变,观察电磁铁吸引大头针数目的多少.这一实验的目的是研究电磁铁的磁性与哪个因素有关(  )

A.电磁铁的极性

B.线圈的匝数

C.电流的方向

D.电流的大小

答案

答案:B

阅读理解

Qi Haoran, a Junior 1 student, was quite busy over the past winter vacation – and not just with homework.Qi, together with 10 other classmates made a volunteer group to call on people to join the Clean Your Plate Campaign (“光盘行动”).

The 11 students went to many restaurants and told people the importance of saving food.“Excuse me, do you know that 950 million people around the world still haven’t got enough to eat? Please don’t waste food.” They would say this kind of thing hundreds of times every day.

The Clean Your Plate Campaign began on the Internet in January.It calls on people to reduce food waste.

China in these years had serious problems with wasted food.CCTV reported in January that the food Chinese people waste every year is enough to feed 200 million people for a year.

Chinese people are well known for being hospitable (好客的) and generous(大方的).Many even feel that they lose face if their guests have eaten all the food.

Luckily, the campaign has got the support of many.In a restaurant in Xinjiang, the owner give the guests who have eaten all that they ordered a sticker (贴花).People can enjoy a free meal when they have 10 stickers.More than 750 restaurants in Beijing have begun to offer smaller dishes and encourage their guests to take leftovers (剩饭剩菜) home.

To reduce food waste is a big task, and it needs time.It’s important that everyone does their bit, just like Qi.Did you finish your meals today?

根据短文内容,从A、B、C、D四个选项中选择最恰当的答案。

小题1:What did the 11 students do in the winter vacation?

A.The helped each other with homework.

B.They opened a restaurant together.

C.They volunteered for a campaign.

D.They collected money from customers in restaurants.小题2:In this passage the underlined word “call on ” means ______.

A.打电话

B.号召

C.拜访

D.叫喊小题3:The Clean Your Plate Campaign calls on people to _____.

A.do volunteer work

B.work part time in restaurants

C.cut down on food waste

D.wash your plates after dinner小题4:From Paragraphs 4-5, we learn that _____.

A.wasting food is a serious problem in China

B.Chinese people waste the most food in the world

C.Chinese people want to show off that they are rich

D.most Chinese people are afraid of losing face at the table小题5:What did the restaurant in Beijing do to support the campaign?

A.The owner would have dinner with those who had eaten up their food.

B.It offered a free meal to the guests who had finished all their food ten times.

C.It gave stickers to the guests who ordered small dishes.

D.It encouraged customers to take leftovers home.

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