B 

           Teens who spend hours on the Internet may be at risk for high blood pressure. Researchers found that teens who spent at least 14 hours a week on the Internet had their blood pressure increased. Of 134 teens described by researchers as heavy Internet users,26 had higher blood pressure.

           This is believed to be the only study to show a link between time spent on the Internet and high blood pressure. The findings add to growing research that has shown an association between heavy Internet use and other health risks like anxiety,depression,obesity and social isolation.

          “Using the Internet is part of our daily life,but it shouldn’ t  destroy us,” says Andrea,a researcher at Henry Ford's Department of Public Health Sciences and the study's  lead author. uIn our study,teens considered heavy Internet users were on the Internet an average of 25 hours a week. It's important that young people take regular breaks from their computers or smartphones,and engage in some form of physical activity. I recommend children to limit their time at home on the Internet. I think two hours a day,five days a week is OK."

          Andrea says school nurses could condudt annual health screenings (检查) in which blood pressure and Internet use behavior could be assessed. Students with high blood pressure would then have a follow-up visit to determine the next step.

          Researchers analyzed data collected from 335 teens aged 14 to 17 who participated in the study. Participants completed a 5 5-question survey of their Internet use during one week. Researchers found that teens spent an average of 15 hours a week on the Internet at either school or home; 39 percent of girls were heavy Internet users compared to 43 percent of boys; 43 percent of heavy Internet users were considered overweight compared to 26 percent of light Internet users.

5. What do we know about the study?

   A. It linked high blood pressure with Internet use,

   B. It was designed by teqis with high blood pressure.

   C. It was aimed at studying the causes of high blood pressure.

   D. It found heavy Internet users were likely to have mental problems:

6. Andrea advises teens to .

   A. have regular checkups

   B. limit their time at home

   C. spend less time on the Internet

   D. take regular breaks from their study

7. What can we learn from the last paragraph?

   A. 43  percent of teens were light Internet users.

   B. Nearly half the boys were heavy Internet users.

   C. Most teens spent 14 hours a week on the Internet.

   D. Boys spent 15 hours a week on physical activity.

8. From which part of a newspaper is the text probably taken?

   A. Job.      B. Health.

   C. Fashion.  D. Entertainment.

                              D

                          ★★★★☆

            Is there any hope for the r/nVio (苏门答腊犀牛)?Only about 100 of these small,hairy rhinos remain on the planet. And only a few of them exist in the wild. Scientists are lucky to spot one or two on camera traps every couple years. Like all other rhino species,Sumatran rhinos have been poached (偷猎)for their valuable horns,which are used in traditional Asian medicine and can sell at high prices. Although rhino horns have no medical effects,they are used to “treat” everything.

             That it's  so hard Jto find the last wild Sumatran rhinos dnesn't  stnn nnar.hp.rc frnm trvino Rarlipir thic year the species was declared extinct in the wild m Borneo. A year earlier,some people rescued what now appears to have been the last wild Bornean rhino in Malaysia from a poacher's trap. That rhino,a female named Iman,was briefly thought to be a sign of hope for the species. At the time of her rescue,it appeared that she was pregnant. That didn’t  turn out to be the case. Examinations showed that she — like many of the remaining females in her species — was suffering from a disease ihat prevented her from becoming pregnant.

              Another sign of hope arrived this month. A Sumatran rhino named Harapan — whose name means “hope” 一 arrived in Indonesia as part of a program. The American rhino joined his older brother,Andalas,who arrived in Sumatra in 2007 and fathered a rhino in 2012. All previous breeding efforts in Indonesia failed — for 140 years ‘— until Andalas arrived. Andalas* mate,Ratu,is now expecting her second baby rhino.

              However,any rhinos in captivity would not help the remiaining wild rhinos,because they probably wouldn't be able to be released into the jungle after being raised among humans. That means protecting the few wild rhinos remains important.

13. What do we know about the wild Sumatran rhino from Paragraph 1 ?

   A. It lives a safer life than before.

   B. Its horn is seldom used in medicine.

   C. It isn't afraid of being taken pictures.

   D. It is extremely hard to see in the wild.

14. Why didn* t Iman become pregnant?

   A. Because she was too old.

   B. Because there was no male rhino. 

   C. Because her health didn't allow it.

   D. Because she got injured in the trap.

15. Harapan was brought to Indonesia to .  

   A. unite' with Ratu

   B. father rhinos there

   C. be released into the wild

   D. help scientists do research

16. The last paragraph mainly shows that.

   A. a few wild rhinos have been found recently

   B. wild Sumatran rhinos should be well protected

   C. many of the remaining female rhinos have got a bad disease

   D. the Sumatran rhinos in captivity will be released into the jungle

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