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[ 物理 ] 如图所示，AC、BD为一边长为d的正方形ABCD的两条对角线．空间存在一与正方形所在平面平

如图所示，AC、BD为一边长为d的正方形ABCD的两条对角线．空间存在一与正方形所在平面平行的未知静电场．现有一带电量为+q的点电荷，先从A点运动到B点，电势能减少了E；又从B点运动到C点，电势能增加了E．下列关于此空间存在的静电场的说法，正确的是（　　）
A．若为位于D点的电荷量为Q的负点电荷产生的电场，则AB两点电势差为E/Q
B．若为位于D点的电荷量为Q的正点电荷产生的电场，则B点场强大小为kq/2d2
C．若为匀强电场，则场强方向垂直于AC并由B指向D，场强大小为
D．若为匀强电场，则场强方向垂直于AC并由D指向B，场强大小为

2016-05-16 | 0

[ 数学 ] 用科学记数法表示﹣0.0000064记为 [     ] A．﹣64×10﹣7B．﹣0.6

用科学记数法表示﹣0.0000064记为
[     ]
A．﹣64×10﹣7
B．﹣0.64×10﹣4
C．﹣6.4×10﹣6
D．﹣640×10﹣8

2016-05-17 | 0

[ 数学 ] 计算：3-4÷3-34327+(-213)2．

计算：
3-4
÷
3-
343
27
+
(-2
1
3
)2
．

2016-05-18 | 0

[ 语文 ] “为天下唱，宜多应者”与孟子的哪一句话观点相似？_____________________

“为天下唱，宜多应者”与孟子的哪一句话观点相似？
__________________________________________

2016-05-26 | 0

[ 语文 ] 把能搭配的词用线连起来。一位    纸条一袋    石头一张    老人一块    饼干

把能搭配的词用线连起来。
一位    纸条
一袋    石头
一张    老人
一块    饼干   

专心地    说  
大声地    走  
慢慢地    哭  
伤心地    看

2016-05-27 | 0

[ 语文 ] 请以介绍“杜鹃”的特性为重点内容，将下面一段话改写成说明性文字。（不超过45字）（6分）在

请以介绍“杜鹃”的特性为重点内容，将下面一段话改写成说明性文字。（不超过45字）（6分）
在草长莺飞，春雨淅沥的时节，人们的耳畔便多了这样一种清脆悠扬的歌声。这歌声从春天持续到仲夏，从清晨飘荡到深夜，这就是杜鹃的啼叫。我们一提起杜鹃，心头眼底便好像有说不尽的诗意。杜鹃也因一遇春种来临就会适时地催人“布谷”，被人们亲切地称为“布谷鸟”。陆游有诗云：“时令过清明，朝朝布谷鸣。”然而杜鹃自己不筑巢，到了生殖季节，杜鹃妈妈会在产卵前用心寻找其它小鸟的巢穴。选定目标后，便产卵在别人的巢中，让它们帮忙孵化，小杜鹃孵化出来之后，每每将那些小鸟的雏儿挤出巢外，自己独霸着母鸟的哺育。因此，也有不少人对它颇有微词。

2016-05-27 | 0

[ 英语 ] At nine o’clock in the evening on 15 Septembe

At nine o’clock in the evening on 15 September,1961, Mr and Mrs Hill were driving along Motorway 3 (3号高速公路) when they saw a spaceship.
They drove on to Sand field, the next town. They got there the next morning. Mr Hill looked at his watch.
"Why did it take us so long? " he asked. "Three hundred and four kilometers in seven hours?"
Mrs Hill went white in the face. "Something is strange, "she said." But I can’t remember anything."
Later, with the help of, a doctor, they remembered everything. After they saw the spaceship, they got out of their car and then they "lost" several hours.
They remembered they heard a "bleep, bleep" noise from the spaceship. When they tried to run back to their car, there were three aliens (外星人) between them and their car.
The aliens took them to their spaceship. They asked them questions about the food and drink on Earth. They were very interested in Mr Hill’s teeth because his teeth could come out!
Finally, the aliens took them back to their car and the spaceship flew away.
小题1:What time do you think the Hills arrived at Sand field?
A．At4 a.m. on 15 September.B．At 4 a.m. on 16 September.
C．At 6 a.m. on 15 September.D．At 6 a.m. on 16 September.
小题2:What made Mrs Hill feel strange at first?
A．Short way but long time.B．Short time but long way.
C．Poor memory during the drive.D．Careful driving on Motorway 3.
小题3:The right order to show what happened to the Hills is
a. they got out of the car                  b. they saw a spaceship
c. they were asked some questions          d. they met three aliens
A．b;a;d;cB．a;b;c;d
C．d;a:b:cD．c:d:b:a
小题4:Which of the following pictures can best explain why the aliens were interested in Mr Hill’s teeth?

2016-05-28 | 0

[ 英语 ] 完形填空。      If you often have a cold, headache

完形填空。
     If you often have a cold, headache or backache, there is something wrong with your health. Eating healthy
food   1   good for our health.
     Tofu (豆腐), milk, vegetables are healthy for us. Tofu is a kind of traditional (传统的)   2   food. We often 
  3  it in China. Now more and more people   4   other countries think tofu is good for health,   5   . They also
like eating it.
     Milk is   6   kind of health food. Every day you should   7   one or two glasses of milk. It can   8   us strong.
     Vegetables are very important. You should eat   9   them. There are vitamin (维他命) A, B, C, D, E and so
on in them.
     As we know, it's important  10   a balanced diet (均衡饮食). We must have the right kinds of food. We
should also eat some pork, chicken and beef. We should eat more fruit and vegetables but less meat.
(    )1. A. are      
(    )2. A. Japanese 
(    )3. A. eat      
(    )4. A. for      
(    )5. A. too      
(    )6. A. the other
(    )7. A. drinking 
(    )8. A. keep     
(    )9. A. a lot    
(    )10. A. making   		B. is     
B. American
B. drink  
B. with   
B. also   
B. other  
B. drink  
B. makes  
B. plenty 
B. to keep 		C. will be
C. English
C. take   
C. in     
C. well   
C. another
C. take   
C. keeps  
C. much   
C. keeping 		D. was          
D. Chinese      
D. play         
D. at           
D. either       
D. others       
D. to take      
D. keeping      
D. a lot of     
D. to drink     

2016-05-28 | 0

[ 英语 ] By the time we rushed to the hall, the party

By the time we rushed to the hall, the party ________ for ten minutes.
A．had begunB．beganC．was onD．had been on.

2016-05-28 | 0

[ 英语 ] 想一想，写一写。 告诉你的朋友你在冬天喜欢做什么。   要求：1. 条理清楚，语句通顺。2

想一想，写一写。
告诉你的朋友你在冬天喜欢做什么。   
要求：1. 条理清楚，语句通顺。2. 书写清晰，标点正确。3. 不得少于15个单词。
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2016-05-28 | 0

这些题目你会做吗？
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