问题 阅读理解

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.

答案

1-5: ABCAA

实验题

通过半年的化学学习,你对化学实验有了一些认识,请你解答下列问题:

(1)在电解水的实验中,两电极相连的玻璃管上方产生的气体是        ,两者的体积比约为      ,这个实验证明了水是由                              组成。该反应的化学方程式为                                                    

(2)根据下图所示实验装置回答下列问题:

 

①用氯酸钾和二氧化锰混合加热制取O2应选用的发生装置(填序号,下同)____;若用高锰酸钾加热制取O2该装置还需做的一点改动是                             ;用过氧化氢溶液和二氧化锰混合制取O2应选用_________;制取H2应选用__________;

制取CO2应选用_______,反应的化学方程式为                                

②收集O2可选用________, 理由是                      ; 收集CO2应选用    

(3)过滤操作中的要点常简记为“一贴二低三靠”,请你解释“三靠”的具体含义:。

“三靠”:①                       ,②                                    ,

                                                                        。

单项选择题