题目

任务型阅读。     To me, music is food and water. I can't live without it. I know this is not true for everybody. Usually lots of people go to concerts or listen to music records. Maybe some of you don't do these and you get along quite well, but music is everywhere in our life. For example, when you watch movies or TV plays, will you find them interesting if there is no music? I'm sure you will find them boring. And when you are waiting for the train or the plane, you would like some music because it makes the time seem (好像) shorter.21     Some people like to sit by the下列有关人类遗传病的叙述正确的是 ( )A.遗传病是由孕妇服用或注射了某些有致畸作用的药物引起的B.遗传病都是先天性的,因而某遗传病患者的父母或祖辈中一定有该病的患者C.染色体的变化、基因的变化都有可能导致人类出现遗传病D.先天性的疾病都是遗传病,为避免遗传病的发生,人类应提倡优生、优育 
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