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已知番茄红果对黄果为显性，用纯合的红果品种与黄果品种杂交，所得F1基因型都为Aa，F1自交，共收获1200个成熟的番茄。从理论上分析，有红果番茄多少个（ ）
A.
1200
B.
900
C.
300
D.
0
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参考答案：
A
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The Wilsons live in ______A-shaped house near the coast . It is _______17th century cottage.
A.
the, /
B.
an, the
C.
/, the
D.
an ,a
How many times will listeners have a chance to win?
A.
Less than four times.
B.
Four or five times.
C.
More than five times.
What I said to the New Zealander is .
A.
really pure AE
B.
really pure BE
C.
half AE and half BE
D.
not English at all
We all enjoyed ourselves at the concert. The wonderful performances of the artists have made a deep ______ on us.
A.
opinion
B.
relation
C.
impression
D.
feeling
Which of the following is right？
A.
AE and BE are two different languages.
B.
There are some differences between AE and BE.
C.
New Zealanders speak BE.
D.
New Zealanders cannot understand Americans.
相关题目：
The Wilsons live in ______A-shaped house near the coast . It is _______17th century cottage.
A.
the, /
B.
an, the
C.
/, the
D.
an ,a
How many times will listeners have a chance to win?
A.
Less than four times.
B.
Four or five times.
C.
More than five times.
What I said to the New Zealander is .
A.
really pure AE
B.
really pure BE
C.
half AE and half BE
D.
not English at all
We all enjoyed ourselves at the concert. The wonderful performances of the artists have made a deep ______ on us.
A.
opinion
B.
relation
C.
impression
D.
feeling
Which of the following is right？
A.
AE and BE are two different languages.
B.
There are some differences between AE and BE.
C.
New Zealanders speak BE.
D.
New Zealanders cannot understand Americans.
参考解析：
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