题目内容
When a new disease breaks out，experts must what to do in the fastest way．
A．figure out B．take out C．point out D．make out
A
提分百分百检测卷单元期末测试卷系列答案
小学期末标准试卷系列答案A completely new situation will______ when a new tool comes into use.
| A．arise | B．rise | C．raise | D．arouse |
C
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(万亿)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（易吸收的液体）. 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）.
【小题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. |
| A．acceptable | B．valuable | C．accessible | D．easily affected |
| 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. |
| 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. |
I was sitting in class one day when a new kid came in , He was called Christian and he was short and wore a pair of glasses, He walked up to the teacher and told her ,very 36 ,that he was new , The teacher 37 to the empty desk next to me . He sat down , looked briefly at me ,and then looked 38 . I didn’t think he was very nice , and certainly not the 39 I would like to become friends with ,
Over the year，I 40 talked to him，but he smiled at me when our eyes met, always shyly, He never talked to anybody 41 me.
But one day I 42 the unkind kids who were teasing him．We made fun of him 43 in my head I knew it was wrong . “Haven’t you got any friends ?”A kid asked Christian，who had walked past us 44 .“No，he hasn’t got any friends．He’s too 45 .”I said．
Then Christian looked up at me with the saddest eyes I had ever seen. My heart 46 .
In the weeks that followed, he never met my47 in class and never smiled at me. It was really hard for me to 48 to write him a note asking him to 49 it . I knew I had to because I couldn’t 50 the guilt and sadness that I felt 51 I saw him .
The next day in class, I wrote him a note 52 . About five minutes later .I turned and saw tears in his eyes. Later he told me that I would never realize how much my apology had 53 to him. Over the years at high school, we became 54 friends.
Apologies can really change your life , so never55 a chance to tell somebody you are sorry,
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