题目内容

(1)杂种F1个体可产生哪些基因型的配子?比例如何?(2)F2产生基因型为aabbCCDD个体的机率多大?

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What is the main point the writer is trying to make about the frrst method?
[ A] One should let one ' s feet be free.
[ B] One should protect one ' s feet to protect one ' s eyes.
[ C] One should protect one ' s eyes to protect one ' s feet.
[D] One should learn to walk barefooted at home.

[ A] understand
[ B ] understood
[ C ] understanding
[ D] understandable

I don ' t think there is ______in the book on the desk.
[ A ] something important
[ B ] anything important
[ C ] important something
[ D] important anything

What does the bookshop sell?
[ A] Chinese books.
[B]English books.
[C]English-Chinese dictionaries.

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