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【单选题】
吗啡在光照下能被空气氧化变质,这与吗啡具有( )有关A.
甲基
B.
基
C.
羟基
D.
键
E.
胺键
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反馈参考答案：
举一反三
【简答题】植原体引起病害的主要症状表现为黄化、 、 、花变叶及花、叶芽变小。
【简答题】课后题12猴子摘桃
【简答题】-You’ve never seen dinosaur eggs, have you ? --_____. How I wish to visit the Dinosaur World. A、Yes, I have B、No, I haven’t C、Certainly, I have D、Of course, I haven’t
【单选题】He has fully _______ from the virus.
A.
recover
B.
recovered
C.
recovery
D.
recovering
【单选题】听力原文：M: I wish I knew how to swim． W: Why not sign up for the lessons offered by the Physical Education Department? Q: What does the woman suggest? (13)
A.
She will teach him how to swim.
B.
He needs to get physical examinations.
C.
She will help him make the signs.
D.
He should take swimming lessons.
【单选题】13 How I wish I ____ to repair the watch! I only made it worse
A.
had tried
B.
hadn't tried
C.
have tried
D.
didn't try
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