皮皮学，免费搜题
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【单选题】
放线菌在什么环境中生长良好A.
pH3.0～4.5
B.
pH4.5～5.0
C.
pH5.0～6.5
D.
pH7.2～7.6
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皮皮学刷刷变学霸
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【简答题】影响一种商品需求数量的因素包括
【单选题】听力原文：W：Hello，Steve．This is Susan．I’m afraid I won't be able to attend the party． M：Do come after your meeting. Susan．Our party won't be over until mid-night． Q：Why did the woman say that she could not...
A.
She was afraid she might be kept too late.
B.
She would have something more important to do.
C.
She had to meet a friend of hers.
D.
She was not in the mood to attend the party.
【单选题】听力原文：M: Mary, will you come over for tea at three today? W: I'm sorry, I won't be able to, I'll be out of town. What will Mary do?
A.
She will be out of town.
B.
She will drink tea with the man.
C.
She will stay at home.
【简答题】下列植物有机物质中的各种化学成分的分解速率最快的是() A. 木质素 B 纤维素 C 单糖 D 半纤维素
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