Question

D

Holding a cell phone against your ear or storing it in your pocket may be dangerous to your health. This explains a warning that cell phone manufacturers include in the small print that is often ignored when a new phone is purchased. Apple, for example, doesn’t want iPhones to come closer to you than 1.5 centimeters; Research In Motion, BlackBerry’s manufacturer, recommends 2.5 centimeters.

If health issues arise from cell phone use, the possible effects are huge. Voice calls - Americans chat on cell phones 2.26 trillion(萬億)minutes annually - earn $109 billion for the wireless carriers.

Devra Davis, an expert who has worked for the University of Pittsburgh, has published a book about cell phone radiation, “Disconnect.” The book surveys scientific research and concludes the question is not settled.

Brain cancer is a concern that Ms. Davis examines. Over all, there has not been an increase in its incidence since cell phones arrived. But the average masks an increase in brain cancer in the 20-to-29 age group and a drop for the older population.

“Most cancers have multiple causes,” she says, but she points to laboratory research that suggests low-energy radiation could damage cells that could possibly lead to cancer.

Children are more vulnerable to radiation than adults, Ms. Davis and other scientists point out. Radiation that penetrates only five centimeters into the brain of an adult will reach much deeper into the brains of children because their skulls are thinner and their brains contain more absorptive fluid（易吸收的液體）. No studies have yet been completed on cell phone radiation and children, she says.

Henry Lai, a research professor in the bioengineering department at the University of Washington, began laboratory radiation studies in 1980 and found that rats exposed to radiation had damaged DNA in their brains.

Ms. Davis recommends using wired headsets or the phone’s speaker. Children should text rather than call, she said, and pregnant women should keep phones away from the abdomen（腹部）.

1.Why is the warning in the small print?

A．They think people will not care about it.

B．There is not enough space for the warning.

C．They don’t want the users to pay attention to it.

D．The warning is not important at all.

2.What does the underlined word in sixth paragraph probably mean?

A．acceptable        B．valuable           C．accessible         D．easily affected

3.What can we conclude from the last paragraph?

A．Pregnant women should keep cell phones away.

B．People should use cell phones in the correct way.

C．If you are a child, you’d better text than make phone calls.

D．When you use a cell phone, use a wired headset or the phone’s speaker.

4.What does the passage mainly talk about?

A．Be careful when using cell phones.

B．Don’t hold your cell phone against your ear.

C．Rats exposed to radiation have damaged DNA in their brains.

D．Low-energy radiation could damage cells that could lead to cancer.

 

Answer 1

【答案】

1.C

2.D

3.B

4.A

【解析】

試題分析：本文主要講述的就是手機的放射性對人的影響，告誡我們使用手機要當心。

1.C 細節題。根據文章第一段2,3行This explains a warning that cell phone manufacturers include in the small print that is often ignored when a new phone is purchased.可知他們不想使用者了解它的危害。故C正確。

2.D 推理題。根據Children are more vulnerable to radiation than adults, Ms. Davis and other scientists point out.說明孩子對于放射性的影響更為敏感，更容易受到影響。故D項正確。

3.B 推理題。根據文章最后一段Ms. Davis recommends using wired headsets or the phone’s speaker. Children should text rather than call, she said, and pregnant women should keep phones away from the abdomen（腹部）.可知我們要使用耳機之類的工具，如果可能盡量使用短信，來減少對手機的使用。故B正確。

4.A 主旨大意題。本文主要講述的就是手機的放射性對人的影響，告誡我們使用手機要當心。故A正確。

考點：考查新聞報告類短文閱讀

點評：本文主要講述的就是手機的放射性對人的影響，告誡我們使用手機要當心。本文主旨鮮明,很容易在文中找到答案。做題時要注意文章的首段和每一段的首句或尾句，因為它們往往就是文章的主題句。閱讀中要注意要點之間的關系。然后帶著問題，再讀全文，找出答題所需要的依據，完成閱讀任務。