问题 单项选择题 A1型题

甲氨蝶呤按作用机制属于哪类抗肿瘤药()。

A.干扰蛋白质合成与功能的药物

B.抗代谢药

C.破坏DNA结构与功能的药物

D.嵌入DNA干扰转录过程的药物

E.影响激素平衡的药物

答案

参考答案:B

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       It seems that everybody tells lies-well, not big lies, but "white lies". Telling white lies isn't really that bad.
Most of the time, people do it because they want to protect friendship or they don't want to hurt someone. Here
are some ways they do it. 
      ★ Giving false excuses. 
      Sometimes people lie because they don't want to do something. For example, someone invites you to a
party. You think it will be boring, so you say you're busy.
      ★ Lying to make someone feel good. 
      Often we don't tell the truth to make someone feel good. For example, your friend cooks dinner for you, but
it tastes terrible. Do you say so? No! You probably say "Mmm, this is delicious!" 
      ★ Lying to hide bad news.
      Sometimes, we don't want to tell someone bad news. For example, you have just had a terrible day at work,
but you don't want your family to worry about you. So if your parents ask you about your day, you just say
everything was fine.
Some Ways: People Tell White Lies
Ways
Examples
Giving false / wrong excuses 
When you want to refuse a boring party,
you may say 1.                    .
Lying to make someone feel good
When your friend cooks dinner for you,
you probably say that's delicious though 2.                
Lying to 3.              
You have a terrible day but you don't want your family to worry about
you. You may say 4.                 if your parents ask you about your day.
解答题