试题与答案

探究电磁铁的实验如图所示,把小磁针放在电磁铁的A端附近,静止时指向如图,由此可见

题型:探究题

题目:

探究电磁铁的实验如图所示,把小磁针放在电磁铁的A端附近,静止时指向如图,由此可见A端是_____极,电磁铁中的导线绕向应与甲、乙两图中的_____相同。电流表示数保持不变,当连接匝数少的接线柱时发现电磁铁能吸起的回形针少了,说明电磁铁的磁性强弱受___________的影响。

答案:

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题型:阅读理解

All over the world people enjoy sports. Sports help to keep people healthy, happy and help them to live longer.

Sports change with the season. People play different games in winter and summer.

Games and sports often grow out of people’s work and everyday activities. The Arabs use horses or camels in much of their everyday life; they use them in their sports, too.

Some sports are so interesting that people everywhere go in for them. Football, for example, has spread around the world. Swimming is popular in all countries near the sea or in those with many rivers.

Some sports or games go back to thousands of years, like running or jumping. Chinese boxing, for example, has a very long history. But basketball and volleyball are rather new. Neither one is a hundred years old yet. People are inventing new sports or games all the time.

People from different countries may not be able to understand each other, but after a game they often become good friends. Sports help to train a person’s character(性格). One learns to fight hard but fight fair, to win without pride and to lose with grace(体面)

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B.about 100 years ago people ran or jumped when they played

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C.sports help to train one’s character

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B.sports and games should be treated(对待)only as amusement(娱乐活动)

C.sports and games are only useful to the old

D.sports and games can help people understand each other.

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