热点试题

[ 数学 ] 设a≥b>0,求证:3a3+2b3≥3a2b+2ab2.

设a≥b>0,求证:3a3+2b3≥3a2b+2ab2

2016-05-16 | 0

[ 数学 ] 椭圆的左、右焦点分别为F1、F2,过椭圆的右焦点F2作一条直线l交椭圆与P、Q两点,则△F

椭圆的左、右焦点分别为F1、F2,过椭圆的右焦点F2作一条直线l交椭圆与P、Q两点,则△F1PQ内切圆面积的最大值是      

2016-05-17 | 0

[ 数学 ] 下列四幅图中,∠1和∠2是同位角的是 [     ] A. ⑴、⑵ B. ⑶、⑷ C.⑴、

下列四幅图中,∠1和∠2是同位角的是

[    ]
A. ⑴、⑵
B. ⑶、⑷
C.⑴、⑵、⑶
D.⑵、⑶、⑷

2016-05-19 | 0

[ 数学 ] 因为6÷0.3=20,所以6是0.3的倍数,但0.3不是6的约数.______.

因为6÷0.3=20,所以6是0.3的倍数,但0.3不是6的约数.______.

2016-05-21 | 0

[ 数学 ] 一块长方形地长117米,宽比长少59,宽有多少米?列式:______.

一块长方形地长117米,宽比长少
5
9
,宽有多少米?列式:______.

2016-05-21 | 0

[ 数学 ] 展开式的二项式系数的和=                 

展开式的二项式系数的和                 

2016-05-26 | 0

[ 语文 ] 动手做一做,写一写。 把一杯水放入冰箱的冷冻柜中,第二天再把它拿出来,你发现了什么?说说生

动手做一做,写一写。
  把一杯水放入冰箱的冷冻柜中,第二天再把它拿出来,你发现了什么?说说生活中哪些东西是利用这个原理制成的。
______________________________________________________________________________________

2016-05-27 | 0

[ 英语 ] Alan is a 16-year-old boy. He is the only chi


Alan is a 16-year-old boy. He is the only child in his family. Alan is an American high school student. He lives in New York. Art and music are his favourite subjects(科目). He loves studying and also love sports. He usually goes swimming three or four times every week. Alan’s father works in a restaurant(饭店) near New York. He likes swimming, too. So Alan often go swimming with his uncle. Cool water always make him happy. American students are different(不同的) from us. On Saturdays, he often has parties (派对) with his friends and they always enjoy themselves. On Sundays, he usually studies at home and watches sports programs(节目). His favourite drink is Coke, but Coke is an unhealthy drink. He often eats vegetables and he often does some sports to keep healthy. (健康)
小题1:Alan’s father is a _________. .
A.teacherB.waiter(服务员)C.reporter(记者)D.student
小题2:Alan likes ____________________.
A.Art and musicB.singing and sports
C.studying and sportsD.A and C
小题3:How many people are there in Alan’s family ?
A.1B.3C.4D.5
小题4:What does Alan often do on Sundays ?
A.He often go swimming with his father.
B.He often has parties with his friends.
C.He usually studies at home and watch TV.
D.He always does some sports.
小题5:What’s the meaning of the underline (划线) word, “unhealthy” in the passage ?
A.不健康的B.美味的C.有营养的D.受欢迎的

2016-05-27 | 0

[ 英语 ] 从方框中选择适当的句子,完成下面的对话(其中有两项是多余选项) A. What's the

从方框中选择适当的句子,完成下面的对话(其中有两项是多余选项)
A. What's the weather like in your hometown?
B. What is it famous for?
C. It's in the south of Guangdong.
D. I'm going to see ruy grandma.
E. That's great !
F. It's about 50 thousand people.
G. She lives in my hometown.
Darning: Hi , Lingling. Where are you going next week?
Lingling: Hi , Daming.      
Daming: Where does she live  1  
Lingling:   2  
Daming: Where is your hometown?
Lingling:   3   It's famous for bananas.
Daming: What's the population of it?
Lingling:   4  
Daming: Is your hometown newer than before(以前)?
Lingling: Yes, it is.And it's more beautiful.
Daming:   5   Can you take photos when you get back next week?
Lingling: No problem!

2016-05-28 | 0

[ 英语 ] When they came in, Mr Harris______like a baby

When they came in, Mr Harris______like a baby.
Nobody would like to wake him from a good dream,because he needed rest.
A.fell asleepB.was sound asleep C.got asleepD.went to sleep

2016-05-28 | 0