问题
单项选择题
生甘遂内服量应控制在（）
A.0.002~0.004g
B.0.015~0.03g
C.1~2g
D.3~6g
E.3~15g
答案
参考答案：B
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生甘遂内服量应控制在（）
A.0.002~0.004g
B.0.015~0.03g
C.1~2g
D.3~6g
E.3~15g
参考答案：B
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| The Internet has become an important part of teenage life. Most of them use the Internet to get lots of knowledge and 1 . The teenagers keep in touch with their friends online. It's 2 than phoning someone far away and e-mail is 3 much quicker than ordinary mail. But some teenagers are not using it 4 the right way. Some of them would find life difficult without it. Some teenagers spend 5 time online. Some of the students who used to do well at school are now failing in exams because now they spend most of their 6 playing games online. It is 7 for teenagers to use the Internet properly. They should learn 8 to use the Internet for study and keep away from 9 websites. They should make sure that surfing the Net doesn't 10 their homework or being with their friends. | ||||
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