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【单选题】
某种性状表现相同的两个品种杂交, Fl 表现与亲本不同,这是 ____ 。A.
一因多效
B.
完全显性
C.
不完全显性
D.
多因一效
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【简答题】北斗3号导航卫星系统有 个MEO卫星。
【简答题】I love secondhand books far more than new ones! I especially like books that someone else has gone through first. It’s a kind of connection — and an experience of wondering exactly who has been there ...
【单选题】--How did ____ feel to run 3000 meters at the sports meet? --Terrible! Especially when I saw I was left so far _____ by the others.
A.
that; alone
B.
it; alone
C.
that; behind
D.
it; behind
【单选题】___ reading books in my spare time, I also surf on the internet sometimes.
A.
Including
B.
Except
C.
But
D.
Besides
【单选题】---Did Tom win the 200-meter race at our sports meet? ---Of course not. I’m a poor runner and he did _______ than I.
A.
as well as
B.
no better
C.
no worse
D.
not better
【简答题】I’ve
always (1 )
________ (love)
books.
【简答题】根据短文内容，完成下列句子。 John: I'm 15 years old and I love football. I also like reading, especially (尤其是) stories about people from other countries. I don't enjoy singing or playing computers. I think that roc...
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