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1) 指向 2) 發(fā)出,射出 3) 無(wú)疑地 4) 例如 f 5) 花費(fèi)-做- 6) 打開(kāi)(水,電視,收音機(jī),燈,煤氣等) 7) 連接,相連 8) 單擊,點(diǎn)擊 9) 為-所知曉 10) 夢(mèng)想做- 11) 在-取得巨大進(jìn)步 12) 未來(lái) 13) 建議某人做某事 a 14) 期待某人做某事 Topic 2 of Unit 4, Grade 9 Name No. Class Mark 查看更多

 

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在物理學(xué)中,磁場(chǎng)的強(qiáng)弱用磁感應(yīng)強(qiáng)度(用字母B表示,國(guó)際單位是特斯拉,符號(hào)是T)來(lái)表示,磁感線越密的地方,磁場(chǎng)越強(qiáng),磁感應(yīng)強(qiáng)度B越大.

(1)在圖20中,甲為某磁極附近磁感線的方向和分布的示意圖,由圖可知,該磁極為 ▲ 極,若在l處放置一個(gè)小磁針,當(dāng)小磁針靜止時(shí),其指向應(yīng)是圖乙中的  ▲   .
(2)磁敏電阻阻值的大小隨磁場(chǎng)的強(qiáng)弱變化而變,圖丁是某磁敏電阻R的阻值隨磁感應(yīng)強(qiáng)度B變化的圖象,據(jù)圖線可知,磁敏電阻的阻值隨磁感應(yīng)強(qiáng)度B的增大而▲ .圖線沒(méi)有過(guò)坐標(biāo)原點(diǎn),說(shuō)明  ▲  .
(3)王強(qiáng)設(shè)計(jì)了一個(gè)可以測(cè)量該磁敏電阻R的電路如圖丙所示,(其中磁敏電阻所處的磁場(chǎng)未畫(huà)出).將該磁敏電阻R放置在磁場(chǎng)中的位置某處,測(cè)出電阻后,利用R—B特性曲線可以讀出相應(yīng)的磁感應(yīng)強(qiáng)度.
①在圖甲磁場(chǎng)中1處,測(cè)得的數(shù)據(jù)如圖20表中所示,則該磁敏電阻的測(cè)量值為 ▲ Ω. 
②根據(jù)該磁敏電阻的R-B特性曲線可知,1處的磁感應(yīng)強(qiáng)度為   ▲    T.
③在實(shí)驗(yàn)過(guò)程中,僅將磁敏電阻從1處移至2處,其它條件不變,那么電流表的示數(shù)
▲   (填“增大”、“減小”或“不變”).
④依據(jù)上述方法獲得的磁感應(yīng)強(qiáng)度B的測(cè)量值與該點(diǎn)實(shí)際值存在不小的誤差,為盡可能準(zhǔn)確反映空間某點(diǎn)磁場(chǎng)的強(qiáng)弱,你認(rèn)為在選擇磁敏電阻時(shí)應(yīng)注意什么問(wèn)題?

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你的美國(guó)好朋友Tony 要來(lái)中國(guó),請(qǐng)你給他寫(xiě)封E-mail, 講述一些中國(guó)的禮儀,使他不至于太緊張。(80詞左右)提示:
1. 中國(guó)是一個(gè)歷史悠久的國(guó)家,人們第一次見(jiàn)面時(shí)應(yīng)該握手。(long history, shake hands)
2. 你應(yīng)該用筷子而不是刀叉吃東西。( be supposed to )
3. 家人們圍著桌子坐,吃米飯時(shí)端起飯碗吃。( sit at a table)
4. 把筷子插進(jìn)食物里是不禮貌的,用筷子指向他人也是不禮貌的。( It’s rude to …)
5. 中國(guó)的禮儀與美國(guó)很不相同,但不要著急,很快就會(huì)習(xí)慣的。(get used to)
Dear Tony,
                                                                              
                                                                              
                                                                              
                                                                              
                                                                              
                                                                              
                                                                              
                                                                              
                                                                              
     Best wishes!                                                             
                                                                  Yours,      
                                                                  Li Hua     

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你的美國(guó)好朋友Tony 要來(lái)中國(guó),請(qǐng)你給他寫(xiě)封E-mail, 講述一些中國(guó)的禮儀,使他不至于太緊張。(80詞左右)提示:

1. 中國(guó)是一個(gè)歷史悠久的國(guó)家,人們第一次見(jiàn)面時(shí)應(yīng)該握手。(long history, shake hands)

2. 你應(yīng)該用筷子而不是刀叉吃東西。( be supposed to )

3. 家人們圍著桌子坐,吃米飯時(shí)端起飯碗吃。( sit at a table)

4. 把筷子插進(jìn)食物里是不禮貌的,用筷子指向他人也是不禮貌的。( It’s rude to …)

5. 中國(guó)的禮儀與美國(guó)很不相同,但不要著急,很快就會(huì)習(xí)慣的。(get used to)

Dear Tony,

                                                                              

                                                                              

                                                                              

                                                                              

                                                                              

                                                                              

                                                                              

                                                                              

                                                                              

     Best wishes!                                                             

                                                                 Yours,      

                                                                   Li Hua     

 

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根據(jù)括號(hào)內(nèi)的漢語(yǔ)提示,完成句子。(每空一詞)

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________(不禮貌的).

 

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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(雨傘).

1.Where did the story take place(發(fā)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. 賣(mài)                   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(標(biāo)題) for the story?

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

 

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