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【多选题】
水稻杂交制种隔离的距离一般山区、 丘陵地区制种田要求在 m以上；平原地区制种田要求至少 m以上。A.
50
B.
100
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举一反三
【单选题】正确的 C 语言标识符是 ( )。 A . _buy_2 B . 2_buy C . ?_buy D . buy?
A.
． _buy_2
B.
． 2_buy
C.
． ?_buy
D.
． buy?
【单选题】How nice the bag is! Let's _______. [ ]
A.
buy it him
B.
buy him it
C.
buy it for him
D.
buy them it
【单选题】—Do you want ____for your son? —Yes, I do.
A.
to buy any books
B.
buy any books
C.
to buy some books
D.
buy some books
【简答题】Jeans are trousers made of a kind of clothe called denim. For many people, blue jeans represent American culture. The history of blue jeans usually begins with a man named Levi Strauss. Although he di...
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