常人眼压是（） A.6～18mmHg B.10～21mmHg C.12～20mmHg

阅读理解。

     Jack is ten years old this year. He is in Grade Three. He doesn't work hard at school. His teacher doesn't

like him. But Jack thinks he is the cleverest student in his class. And he thinks his maths is good. On a Sunday

afternoon, Jack goes home. He feels very hungry. So he says to his mother,"Mum, I am very hungry. Can I

have some food to eat?" "Supper is not ready now, but there are two apples on the plate (盘子).You can eat

them first." When he sees the two apples, Jack says,"Mother, I have three apples now. Look! This is the first

one. This is the second one. One and two is three. I am very clever.""Yes, You're very clever," says his

mother."Now give me the first apple, your father will eat the second one. And you eat the third one."

1. Jack's teacher doesn't like him because ________.

A. he doesn't work hard at school

B. he doesn't listen to his teacher in class

C. he doesn't do his homework

D. he doesn't go to school on time

2. Jack thinks his _________ is good.

A. English

B. maths

C. Chinese

D. homework

3. One day when Jack goes home. He feels ________.

A. happy

B. sad

C. hungry

D. thirsty

4. His mother tells him there are two apples _________.

A. on the plate

B. on the table

C. on the bed

D. on the chair

5. Can Jack eat the third apple?

A. No, he can't.

B. No, he can.

C. Yes, he is right.

D. Yes, he can't.

如图，质量m=2.5kg的物体A，在水平推力F的作用下，恰能沿倾角为θ=37°的斜面匀速上滑，g取10m/s²。（sin37°=0.6，cos37°=0.8）

（1）若A与斜面间动摩擦数为μ=0.5，求F。

（2）若斜面是光滑的，推力F=15N，方向为平行斜面向上，为使A在斜面上运动的加速度大小小于1m/s²，求倾角的正弦值sinθ的范围。

在直营连锁中财务管理是哪种？（）

A.总部统一核算

B.门店有提留利润

C.门店掌握进货资金

D.总部统一分配个人收入

在傍晚开放的花是（）

A、月见草

B、半支莲

C、酢浆草

D、牵牛

以下关于防治焚烧产生大气污染的做法，不符合《大气污染防治法》的是( )。

A．在人口集中地区禁止焚烧沥青、油毡、橡胶

B．在人口集中地区严格限制焚烧塑料、皮革、垃圾

C．禁止在人口集中地区、机场周围露天焚烧秸秆、落叶等产生烟尘污染的物质

D．禁止在交通干线附近露天焚烧秸秆、落叶等产生烟尘污染的物质