单项选择题

A lot changed in between the births of my second and third daughters. For one thing, thistime around I really am getting no sleep; for another, the pediatrician recommended something forour 1 - month - old that is different from what had been suggested for our other children. She said we needed to pick up a liquid multivitamin that contains 400 international units (IUs) of vitamin D. It was a little confusing, because with our first daughter, now almost 4, the doctor told us to simply get her out in the sun from time to time to let her body produce vitamin D. When our second child was born two years ago, we were told to give her a multivitamin that had 200 IUs ofvitamin D. And now another change. So, what gives with vitamin D, and what do we really know about its risks and bene: fits
How much vitamin D did the pediatrician recommended for the writer’s third daughter

A. 200 IUs
B. 400 IUs
C. 4 IUs
D. None
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单项选择题
Since then, Cash has focused her practice on video -game and Internet addiction, treating patients who use their electronic media so obsessively that they stop sleeping and eating properly, ruin relationships with loved ones, suffer repetitive use injuries such as eye strain and carpal tunnel syndrome, and develop depression and anxiety, among other things. Cash’s private practice is located in Redmond, Wash. , the home of Microsoft--not an entirely surprising hub of compulsive Internet and video- game use, she says. Indeed, the Seattle--Tacoma area is the nation’s 13th largest media market, and has the highest level of Internet use in the country; according to a recent study, more than 45% of adults in the area regularly play video games. There ’s nothing wrong with this technology, says Cash, who is careful to note that it’s not the medium that is to blame, but rather, the lack of education about it. It’s all in how it’s used Which of the following is not a symptom of video - game and Internet addiction according to Cash
A. The stop of sleeping and eating properly.
B. The suffer from repetitive use injuries.
C. The ruin of relationships with loved ones.
D. Insomnia and other health problems.
单项选择题
These cases may sound extreme, but being fired or laid off is undeniably one of life’s biggest blows and can lead to clinical depression, violence and alcohol abuse, as well as strokes and heart attacks. Even the fear of losing a job produces more doctor visits and health worries. In short, the recent news about rising unemployment and job insecurity may be bad news for our health. Being laid off may lead to all the following EXCEPT
A. violence and alcohol abuse.
B. psychological problems.
C. blows and strikes on the body.
D. strokes and heart attacks.
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