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【单选题】
I have _____this nice watch for two years.A.
had
B.
bought
C.
borrowed
D.
lend
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【单选题】下列选项中,没有采用植物组织培养技术的是
A.
利用秋水仙素处理萌发的种子或幼苗,得到多倍体植株
B.
利用花药离体培养得到单倍体植株
C.
利用转基因技术培育抗寒的番茄植株
D.
利用细胞工程培育“番茄—马铃薯”杂种植株
【简答题】句型转换。 1. My new house is very big . (对画线部分提问) _____ _____ your new house? 2. I think he can come tomorrow. (改为否定句) I _____ think he _____ come tomorrow. 3. Jim likes collecting stamps. (改为一般疑问句) _____...
【单选题】下列选项中没有采用植物组织培养技术的一项是 [ ]
A.
利用秋水仙素处理萌发的种子或幼苗，得到多倍体植株
B.
利用花药离体培养得到单倍体植株
C.
利用基因工程培育抗棉铃虫的棉花植株
D.
利用细胞工程培育“番茄——马铃薯”杂种植株
【单选题】听力原文：Two. Which is the woman's house? Man: How will I recognise your house when I call for you, Sue? Woman: Well, it's the same as all the others in the street, but look out for a big tree. It's by th...
A.
B.
C.
【单选题】Your house is ____ mine.
A.
twice as big as
B.
as big as twice
C.
as twice big as
D.
as big twice as
【单选题】Your house is ___ mine.
A.
twice as big as
B.
as big as twice
C.
as twice as big
D.
as big twice as
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