1) 指向 2) 发出,射出 3) 无疑地 4) 例如 f 5) 花费-做- 6) 打开(水,电视,收音机,灯,煤气等) 7) 连接,相连 8) 单击,点击 9) 为-所知晓 10) 梦想做- 11) 在-取得巨大进步 12) 未来 13) 建议某人做某事 a 14) 期待某人做某事 Topic 2 of Unit 4, Grade 9 Name No. Class Mark 查看更多

 

题目列表(包括答案和解析)

在物理学中,磁场的强弱用磁感应强度(用字母B表示,国际单位是特斯拉,符号是T)来表示,磁感线越密的地方,磁场越强,磁感应强度B越大.

(1)在图20中,甲为某磁极附近磁感线的方向和分布的示意图,由图可知,该磁极为 ▲ 极,若在l处放置一个小磁针,当小磁针静止时,其指向应是图乙中的  ▲   .
(2)磁敏电阻阻值的大小随磁场的强弱变化而变,图丁是某磁敏电阻R的阻值随磁感应强度B变化的图象,据图线可知,磁敏电阻的阻值随磁感应强度B的增大而▲ .图线没有过坐标原点,说明  ▲  .
(3)王强设计了一个可以测量该磁敏电阻R的电路如图丙所示,(其中磁敏电阻所处的磁场未画出).将该磁敏电阻R放置在磁场中的位置某处,测出电阻后,利用R—B特性曲线可以读出相应的磁感应强度.
①在图甲磁场中1处,测得的数据如图20表中所示,则该磁敏电阻的测量值为 ▲ Ω. 
②根据该磁敏电阻的R-B特性曲线可知,1处的磁感应强度为   ▲    T.
③在实验过程中,仅将磁敏电阻从1处移至2处,其它条件不变,那么电流表的示数
▲   (填“增大”、“减小”或“不变”).
④依据上述方法获得的磁感应强度B的测量值与该点实际值存在不小的误差,为尽可能准确反映空间某点磁场的强弱,你认为在选择磁敏电阻时应注意什么问题?

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你的美国好朋友Tony 要来中国,请你给他写封E-mail, 讲述一些中国的礼仪,使他不至于太紧张。(80词左右)提示:
1. 中国是一个历史悠久的国家,人们第一次见面时应该握手。(long history, shake hands)
2. 你应该用筷子而不是刀叉吃东西。( be supposed to )
3. 家人们围着桌子坐,吃米饭时端起饭碗吃。( sit at a table)
4. 把筷子插进食物里是不礼貌的,用筷子指向他人也是不礼貌的。( It’s rude to …)
5. 中国的礼仪与美国很不相同,但不要着急,很快就会习惯的。(get used to)
Dear Tony,
                                                                              
                                                                              
                                                                              
                                                                              
                                                                              
                                                                              
                                                                              
                                                                              
                                                                              
     Best wishes!                                                             
                                                                  Yours,      
                                                                  Li Hua     

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你的美国好朋友Tony 要来中国,请你给他写封E-mail, 讲述一些中国的礼仪,使他不至于太紧张。(80词左右)提示:

1. 中国是一个历史悠久的国家,人们第一次见面时应该握手。(long history, shake hands)

2. 你应该用筷子而不是刀叉吃东西。( be supposed to )

3. 家人们围着桌子坐,吃米饭时端起饭碗吃。( sit at a table)

4. 把筷子插进食物里是不礼貌的,用筷子指向他人也是不礼貌的。( It’s rude to …)

5. 中国的礼仪与美国很不相同,但不要着急,很快就会习惯的。(get used to)

Dear Tony,

                                                                              

                                                                              

                                                                              

                                                                              

                                                                              

                                                                              

                                                                              

                                                                              

                                                                              

     Best wishes!                                                             

                                                                 Yours,      

                                                                   Li Hua     

 

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根据括号内的汉语提示,完成句子。(每空一词)

1.There are two______(刀)and three forks on the desk.

2.What______(其他的)do you like, Jack?

3.In a basketball match, players move______(朝向)one end of the court while Throwing the ball to each other.

4.That company_______(提供)us with 3, 000 dollars in 2012.

5.In China, we shouldn’t______(指向)at any one with our chopsticks.

6.Talking loudly in a library, a museum, or a movie theater is________(不礼貌的).

 

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Peter is from Japan. He went to America last month. One day, he walked into a small restaurant for dinner. He wanted to eat eggs, but he didn’t know how to say them in English. He looked around, and he saw a girl eating eggs. So he pointed the eggs on the girl’s table. The waiter knew what he would like. After some time, he brought eggs to Peter.

Then Peter wanted to eat mushrooms(蘑菇), but nobody ate mushrooms in the restaurant. He took out a pencil and drew a picture of a mushroom on the menu. The waiter saw the picture and then went away. After some time, he got back. He didn’t bring mushrooms to Peter, but he gave him a black umbrella(雨伞).

1.Where did the story take place(发生)?

A. In a library           B. In a hospital              C. In a restaurant

2.How did Peter get the eggs ?

A. He pointed the eggs on the girl’s table. and the waiter understood what he wanted to eat.

B. He told the waiter what he wanted to eat.

C. He drew a picture of an egg and the waiter understood what he wanted to eat.

3.What’s the Chinese meaning(意思) of “point”?

A. 扔                       B. 卖                   C. 指向

4. Why did the waiter bring an umbrella to Peter?

A. Because Peter wanted an umbrella.

B. Because the waiter thought the picture on the menu was an umbrella.

C. Because Peter drew an umbrella on the menu.

5.What can be the best title(标题) for the story?

A. A happy Trip             B. A Hard Dinner            C. A Bad Restaurant

 

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