热点试题

[ 数学 ] 下列计算正确的是( )A.1916=54B.412=212C.0.25=0.05D.--2

下列计算正确的是(  )
A.
1
9
16
=
5
4
B.
4
1
2
=2
1
2
C.
0.25
=0.05
D.-
-25
=5

2016-05-16 | 0

[ 数学 ] 如果对任意实数x,二次函数y=ax2+bx+c的值都是正数,那么有( ) A.a>0,b2

如果对任意实数x,二次函数y=ax2+bx+c的值都是正数,那么有(  )
A.a>0,b2-4ac<0 B.a<0,b2-4ac<0
C.a>0,b2-4ac>0 D.a<0,b2-4ac>0

2016-05-19 | 0

[ 数学 ] 用8个同样大小的小正方体拼成一个大正方体,那么每个小正方体的表面积是大正方体表面积的___

用8个同样大小的小正方体拼成一个大正方体,那么每个小正方体的表面积是大正方体表面积的______.

2016-05-21 | 0

[ 数学 ] 函数的定义域为(    )

函数的定义域为(    )

2016-05-22 | 0

[ 语文 ] 下列词语中加点的字,每对读音都不相同的一组是(    )A.兑付/税收瞋目/谨慎可汗/可意

下列词语中加点的字,每对读音都不相同的一组是(    )
A.付/目/谨汗/
B.险/抚恤陨首/然/
C.送/傥/怅炯有神/然不同
D.苍/孑宽/素色彩斑/波壮阔

2016-05-26 | 0

[ 英语 ] 完形填空。先通读下列短文,掌握其大意,然后从A, B, C, D四个选项中选出最佳答案。

完形填空。先通读下列短文,掌握其大意,然后从A, B, C, D四个选项中选出最佳答案。
       Someone says, "Time is money." But I think time is    1    important than money. Why? Because
when money is spent, we can get it back. However, when time is    2   , it'll never    3   . That is    4    
we mustn't waste time.
       It goes without saying that the    5   is usually limited. Even a second is very important. We should
make full use of our time to do    6    useful.
       But it is a pity that there are a lot of people who    7    know how important time is. They spent their
limited time smoking, drinking and playing. They do not know that wasting time means wasting part of
their own    8   .
      In a word, we should save time. We shouldn't    9    today's work for tomorrow. Remember we
have no time to   10  .
(     ) 1. A. much   
(     ) 2. A. cost   
(     ) 3. A. return  
(     ) 4. A. what   
(     ) 5. A. money  
(     ) 6. A. nothing     
(     ) 7. A. do not  
(     ) 8. A. time   
(     ) 9. A. stop   
(     ) 10. A. lose   
B. less    
B. bought  
B. carry   
B. that             
B. time   
B. something       
B. does not  
B. food    
B. leave   
B. save   
C. much less  
C. gone     
C. take     
C. because        
C. day     
C. anything        
C. did not   
C. money    
C. let     
C. spend  
D. even more     
D. finished      
D. bring         
D. why                    
D. food          
D. every things  
D. do            
D. life          
D. give          
D. take        

2016-05-27 | 0

[ 英语 ] 根据汉语提示完成句子。 1. This box is ______ (正方形). 2. I

根据汉语提示完成句子。

1. This box is ______ (正方形).
2. I want to give him a _____ (惊喜) today.
3. Can you ______ (数) these trees?
4. Which ______ (季节) do you like best?
5. We all ______ (穿) school uniform to go to school?
6. I like ______ (美味的) food.
7. I'm ______ (恐怕) you can't.
8. Tomorrow is February the ______ (八日).
9. We had a______ (令人惊喜的) party.
10. This is a ______ (充满希望) season.

2016-05-28 | 0

[ 英语 ] 用所给单词的适当形式填空. 1. Where _____ Jim _____ (buy)

用所给单词的适当形式填空.
1. Where _____ Jim _____ (buy) the computer?
2. Beijing is a _____ (center) city of China.
3. The story is _____ (real) interesting?
4. Do they want _____ (go) to the mountains?
5. We _____ (go) _____ (camp) in the mountains last summer vacation.

2016-05-28 | 0

[ 英语 ] The wounded soldiers were _____ danger, becau

The wounded soldiers were _____ danger, because we had run _____ medicine.
A.in; ofB.into; outC.at; upD.in; out of

2016-05-28 | 0

[ 物理 ] 在图中,根据光的反射定律,画出反射光线OB的入射光线AO。

在图中,根据光的反射定律,画出反射光线OB的入射光线AO。

2016-05-29 | 0