The landing of China's rover （登陆车） Zhurong on Mars shows China has made great in space exploration.（　　）

A．progressB．projectC．productD．protection

一I often see the sign in schools.What does it mean？

一Students bring mobile phones to school.（　　）

A．needn'tB．can'tC．couldn'tD．wouldn't

It's reported that， ，people with college education can make more money than those without.（　　）

A．in generalB．in publicC．in timeD．in all

—Sir，I have trouble doing the voluntary work for the 20th Games of Jiangsu Province in Taizhou.

一Don't worry.A lot of support soon.（　　）

A．is offeredB．will be offered

C．was offeredD．were offered

一Why do you choose to use Beidou Navigation （导航） Satellite System，Mr.Li？

一Because I think it has many advantages GPS （全球卫星定位系统）.（　　）

A．onB．inC．overD．of