已知椭圆x225+y2b2=1(0<b<5)的离心率为35,则b等于( ) A.1

题型:选择题

问题:

已知椭圆
x2
25
+
y2
b2
=1(0<b<5)的离心率为
3
5
,则b等于(  )
A.16B.8C.5D.4
考点:椭圆的性质(顶点、范围、对称性、离心率)
题型:选择题

It was the first day of second grade, and Sarah had been looking forward to this moment. The night before,she laid out her favorite clothes: a white coat and a bright yellow shirt.

When having breakfast, Sarah dropped some food on her shirt, so she had to change into her second-best clothes, blue jeans and a Jonas Brothers T-shirt.

After breakfast Sarah rushed to catch the school bus and when she was just reaching the door the bus driver opened it. The door hit right in Sarah’s face and blood dripped from her nose. The driver wanted to send her home, but she refused, "It is the most important day of the year! I can’t miss it!"

Before classes, Sarah went to her favorite swing(秋千). When rising high, she saw her best friend little Jack. She let go of the swing and waved to him with one hand. Unfortunately, she flew out of the swing and landed hard on the sand, breaking a leg and an arm. As she lay in the sand, she noticed a shiny thing on the ground beside her. With her good hand she took it.

When Sarah’ mother rushed into the ward she was surprised by what she saw: her girl was lying in bed with an arm and a leg in the splint (夹板), a broken nose, and blood stains on her second-best clothes. Expecting to see her child crying, she was confused when she saw a big, bright smile on Sarah’s face. 

"Sarah, look at you!" her mother cried. "You were hurt so badly and why are you smiling?"                "Look, Mommy, I found a diamond!" Sarah laughed. 

Life can be like that. It can be tough, even painful sometimes. But there are always treasures that make the pain worth suffering.

小题1:When Sarah went to school, she was wearing ________________.

A.a white coat and a Jonas Brothers T-shirt

B.blue jeans and a yellow shirt

C.a white coat and a yellow shirt

D.blue jeans and a Jonas Brothers T-shirt小题2:Sarah fell off the swing because _____________.

A.she seldom played swing

B.she rose too high

C.she waved one hand to her friend

D.she was pulled down by her friend小题3:When Sarah’s mother saw her in the ward she felt _______________.

A.upset

B.puzzled

C.relaxed

D.disappointed小题4:Which of the following can be used to describe Sarah’s story?

A.Every cloud has a silver lining.(衬里)

B.Nothing is impossible to a willing mind.

C.First think, then act.

D.No pains, no gains.

题型:选择题

蔡元培先生认为:美育具有育德、促智、健体之功能,这是美育的______功能。(  )

A.直接性 

B.间接性 

C.循环性

D.超美育

题型:选择题
在横线里填上>、<或=.
1
3
______
1
5
1
9
______
1
7
48÷8______54÷9
6
13
______
7
13
4
9
______1-
5
9
3
28
______
3
30
150分______3时1千米______999米  450厘米______45分米.
题型:选择题

()负责协调计算机及会计软件系统的运行工作,按要求具备会计和计算机知识,以及相关的会计电算化组织管理工作经验。

A.电算主管

B.软件操作

C.电算维护

D.电算审查

题型:选择题

患者,男性,25岁。昨天因俯身搬重物,不慎将腰部扭伤,检查:腰部正中有明显压痛点,腰痛不可俯仰,腰部侧弯尚可。针灸治疗取穴可用()

A.手三里、三间

B.人中、后溪

C.后溪、申脉

D.攒竹、昆仑

E.阿是穴、大肠俞

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