7.D男患者的母亲和女儿都是患者,并不能确定该病的遗传方式,A错误;红绿色肓症是单基因遗传病,通过染色体组型分析只能确定染色体异常遗传病,B错误;冠心病、哮喘等属于人类多基因遗传病,在人群中的发病率较高,但易受环境的影响,不适合作为人类遗传病的调查对象,C错误

书面表达One possible version:NOTICEA sports meeting will be held in the playground of our school from next Thursday to FridayAs you know, the pressure of study is very heavy now, especially for those senior 3. So the purpose of the sports meeting is to letevery student get relaxed, as a result of which we students can live happily and heal thilyEveryone is welcome to take part in it. Those who perform excellently at the sports meeting will get prizes. But don' t take theresults so serously because taking part is more important than the result. Good luck to everyone!

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