下列国家中，从事制造业的人口占总职工的百分比最高的是[ ] A．德国 B．印度

阅读理解

       Bruce is an English boy. Now he lives in a big house in Beijing with his parents, but he can't speak

Chinese, he can only speak English. He likes swimming very much, and his house is near a river. He often

goes to swim with his friends in the river. There are three people in his family. His father is a bank clerk,

his mother is a teacher. It's Sunday today, Bruce doesn't go to school. Their parents aren't at work. They

go to the park by bus. Now they are in the park, they enjoy themselves very much.

1. What language does Bruce speak?

A. French.          

B. English.      

C. Chinese.      

D. Japanese.

2. What does Bruce like?

A. He likes running.  

B. He likes talking.  

C. He likes swimming.  

D. He likes singing.

3. Where does Bruce live?  

A. He lives in a hotel.                  

B. He lives in a school.  

C. He lives in a bank.                  

D. He lives in a big house.

4. Where is Bruce's house?

A. Next to a park..    

B. In front of a school.    

C. Near a river.      

D. Behind a park.

5. Where are Bruce and his parents now?  

A. At home.        

B. At school.        

C. In a park.            

D. On a bus.

随着网络设备成本的大大降低，手机上网的资费会越来越低，同时由于视频通话等新鲜通讯方式的运用，手机上网的人数将会快速增长。这其中包含的经济学道理有 [ ]

①商品的价格以价值为基础 ②使用价值影响消费者的消费欲望 ③价值量与社会劳动生产率成正比 ④生产对消费具有决定作用

A．①②③④

B．①③④

C．②③④

D．①②④

在相对湿度为90％以上时，主要适合（）繁殖。

A.湿生性霉菌

B.中生性霉菌

C.干生性霉菌

D.各种霉菌

E.各种细菌

过氧乙酸的主要特性下列哪项描述是错误的（）

A.中效

B.稳定性差

C.对金属有腐蚀性

D.现配现用

E.适用于耐腐蚀物品、皮肤及环境等的消毒灭菌

人工智能的英文缩写是AI。 ( )