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【单选题】
下面图 1 为某二倍体动物精原细胞分裂过程中细胞内的同源染色体对数的变化曲线 , 图 2 表示该动物的一个细胞分裂示意图。下列叙述错误的是A.
CD 段含有 4 个染色体组 ,12 个 DNA 分子
B.
FG 段可发生基因重组
C.
若染色体②上有基因 B, ⑤的相同位点上有基因 b, 则其原因可能是在 AB 段发生了基因突变
D.
图 2 所示细胞是次级精母细胞 , 处于曲线图的 HI 段
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【单选题】I often go to Movie Palace because it has the _____. [ ]
A.
most comfortable seats
B.
most boring movies
C.
most expensive tickets
D.
closest to my home
【单选题】—When can we see the movie “Avatar”? My patience _____. —It has been on in our city so far. [ ]
A.
has run out
B.
has run out of
C.
is running out
D.
is running out of
【简答题】In the development of the company, Coca-Cola has recruited countless artists, movie stars and athletes to _______.
【单选题】Perhaps the most typically American (types) of feature movie, the western, (has been) a resurgence (in) popularity (in recent years).
A.
types
B.
has been
C.
in
D.
in recent years
【单选题】胚是种子最重要的部分,是包在种子内的幼小植物体,它由( ) 四部分组成。
A.
胚乳、胚根、胚轴和子叶
B.
胚芽、胚根、胚轴和子叶
C.
胚芽、胚根、胚乳和子叶
D.
胚芽、胚乳、胚轴和子叶
【单选题】When I got to the cinema, the movie __________ for 10 minutes. [ ]
A.
began
B.
has began
C.
has been on
D.
had been on
【简答题】The movie has been on for half an hour. (对划线部分提问) _____ _______ has the movie been on?
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