C

PARIS—Pregnant mothers in Denmark who regularly used mobile phones were more likely to have children with behavioural problems, according to a study released Tuesday.

“The risk was higher when the kids themselves began using cell phones at a very early age,” researchers reported in the Journal of Epidemiology and Community Health.

Leeks Kheifets of the University of California at Los Angeles and colleagues examined the health records of 28,000 seven-year-olds and their mothers enrolled in the Danish National Birth Cohort. The survey, which included nearly 100,000 women between 1996 and 2002, was designed to track the long-term health of the children. Mothers supplied detailed information about their lifestyles, diet and habits during and after pregnancy, including cell phone use. When their kids reached the age of seven, moms were again quizzed on their own and their children’s health and behaviour.

The researchers found that kids who had been exposed to mobile phones both before and after birth were 50 percent more likely to have behavioural problems. Kids exposed to cell phones only while in the womb(子宫)were 40 percent more likely to show abnormal behaviour, with the percentage dropping to a fifth for children whose first access to the devices occurred after they were born.

The results mirror an earlier study by the researchers of 13,000 other mothers and their kids enrolled in the same national survey. In both groups, about three percent of the children were found to exhibit abnormal behavior, with another three percent borderline(介于两者之间/不明确的).

The author cautioned against drawing a straight line between cell phones and difficult children, but said the findings were troublesome. “Although it is premature(不成熟的/仓促的) to interpret these results as causal, we are concerned that early exposure to cell phones could carry a risk which, if real, would be a public health concern given the widespread use of the technology.” they concluded.

27. Which of the following best summarizes the passage?

A. Cell phones can do harm to children’s growth.

B. Children suffer more from cell phone used.

C. A new side effect of cell phones has been proved.

D. Cell phone use is linked to children’s behavioural problems.

28. The researchers thought their findings were troublesome because the findings .

A. could be interpreted as causal B. still lacked solid evidence.

C. could cause great concern among cell phone users

D. could make the cell phone manufactures angry

29. What can we infer from the passage?

A. Pregnant mothers should limit their cell phone use.

B. Children are allowed to use cell phones too early.

C. Cell phone use has no long-term effect on children.

D. Cell phones have no bad effect on children who use them late.

30. The underlined part “drawing a straight line” in the last paragraph probably means “ ”.

A. giving a clear explanation B. drawing an absolute conclusion

C. finding the shortcut D. telling the difference

D

Bill Fulton doesn’t remember losing his wallet, but its return helped him remember the past. The leather stayed smooth and the cowboy design unblemished(完美无缺的). And when he looked inside, the contents brought back memories from 1946, when he apparently dropped the wallet behind the balcony blcachers(露天看台)in the Baker Middle School gym.

Fulton’s Social Security Card and bicycle license, bearing the address where he lived during his teenage years, were positioned in their respective compartments(隔层), apparently untouched since the year after World War Ⅱ ended.

Worker Nathan Osborne found the wallet—along with old homework, lost library books and a 1964 talent show program—while removing the bleachers for renovations(整修)on June 17. It was brought to Fulton’s door the following day by Melanie Trindle, the Baker Middle School secretary.

Middle School Principal Mindi Vaughan said the brown pine bleachers were connected to the gym balcony’s brick wall and had remained in the same place since the school, known as the Helen M. Stack Building, opened in 1936.

Fulton, 78, said he probably lost the wallet while cheering for the Baker High basketball team with a group of friends. Fulton said the bicycle ID was needed because he delivered medicine for Rodamar Drug. He was surprised, however, that his bicycle ID wasn’t inside. He said he always kept it there.

But rather than focus on what was inside the wallet. Fulton said the recovery has led him to reflect on his life—one that took him to the Korean War and Berlin before the return to Baker City. He worked at Ellingson Lumber Company for 30 years, from March 1964 to April 1994.

Since his retirement, Fulton has enjoyed spending time with his 11-year-old black dog, Smokey. The two often hike the nearby mountains.

Trindle’s knock on the door, wallet in hand, induced(导致/引发) a slight ripple in his life, prompting him to consider the times he hadn’t thought about in many years. “Where did all the times go?” Fulton said with a deep sigh. “It’s hard to believe that the times have gone so fast.” 31. When the wallet was found, it .

A. was still in good condition B. was a little damaged

C. had just lost color D. was just repaired

32. The wallet was important to Fulton because .

A. he could get his bicycle ID back

B. it called up his memories of the past

C. it could help him to find his student ID

D. it made him think of his school days

33. Fulton lost the wallet when .

A. he was doing his homework on the balcony bleachers

B. he was doing some exercise in the Baker Middle School gym

C. he was removing the bleachers for renovations on June 17

D. he was watching a basketball match with his friends

34. After he retired, Fulton .

A. lived a peaceful and pleasant life

B. often regretted losing his wallet

C. lived a hard life by raising dogs in the mountains

D. quite missed his past life

35. Which of the following may best describe Fulton’s feeling when the wallet was returned?

A. Thankful. B. Overjoyed. C. Surprised. D. Doubtful.