Many children think mobile phones are cool. They come in fun colors and let you talk with friends anytime and anywhere.

In the U.S., more than 90 million people use mobile phones. Many of these people are children. For children, mobile phones are more than phone calls. They are fashionable.

Most mobile phone users don’t think about the health problems caused(引起) by mobile phones. Some scientists say that mobile phones give off radiation(辐射) that might be bad for the users. One newest study shows that mobile phone radiation might raise(增加) a person’s chance of getting some kinds of cancer(癌症). Other scientists say mobile phones don’t’ threaten people’s health. They say that they have not found any link(联系) between phone use and cancer.

Scientists say that people can protect (保护) themselves from mobile phone radiation. One way is to use a headset(耳机). Or people can make shorter call.

小题1:Many children like mobile phones because they think mobile phones are _________.

A．cool

B．small

C．cheap

D．their toys小题2:Many of the mobile phone users in the U.S. are ___________.

A．girls

B．boys

C．scientists

D．children小题3:Some scientists think mobile phones aren’t _________ for users health. They causes some kinds of cancer

A．bad

B．good

C．wrong

D．helpful小题4:The underlined word “threaten” in the passage means ____________.

A．威胁.

B．担心

C．治疗

D．证实小题5:What should people do to protect themselves from mobile phone radiation?

A．Make longer calls

B．Use a headset

C．Make shorter calls

D．Both B and C

下图为某地等高线地形图。读图回答1—3题。

1、根据等高线判断，图中河流的大体流向是[ ]

A．自西北流向东南

B．自东南流向西北

C．自东北流向西南

D．自西南流向东北

2、假定该地区为台风“鲇鱼”登陆地附近，在登陆前16小时有一户外旅行团正在该地区活动，并计划在W、Y、Z、X四地中选一地露营，你认为最不可取的地点是[ ]

A．W

B．Y

C．Z

D．X

3、该地区拟建一条铁路，有人设计了一选线方案（如图）。方案沿线甲、乙、丙、丁四处中明显不合理的有[ ]

A．l处

B．2处

C．3处

D．4处