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【简答题】
人全色盲是常染色体隐性遗传,约 8 万人中有一个纯合体。根据调查,他们的平均子女数约为正常人的一半,问:隐性色盲基因的突变率约为_______.
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反馈参考答案：
举一反三
【简答题】除了视频里提到的单片机,你还发现你身边有哪些单片机?请至少说出4个。
【单选题】How does the doctor ask about illness?
A.
How would you like it?
B.
Where are you from?
C.
What do you do?
D.
What's the matter?
【多选题】How to ask about the weather?
A.
What's the weather like?
B.
How's the weather?
C.
What does the weather forecast say?
D.
What's the weather forecast?
【单选题】I want to ask you something _______ how to learn English.
A.
with
B.
to
C.
about
D.
of
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