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【判断题】
判断 可编程控制器只能通过编程软件编制控制程序。A.
正确
B.
错误
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举一反三
【简答题】根据花器官发育的ABC模型，若B类基因突变，则花器官自外而内依次是（）。
【简答题】根据花器官发育的ABC模型，若A类基因突变，则花器官自外而内依次是（）。
【单选题】完成下列各选项 When I was growing up in America, I was ashamed of my mothers Chinese English. Because of her English, she was often treated unfairly. People in department stores, at banks, and at restaurants...
A.
Because she was unable to speak good English．
B.
Because she was often misunderstood．
C.
Because she was not clearly heard．
D.
Because she was not very polite．
【简答题】根据花器官发育的“ABC模型”，若拟南芥的C类基因突变，则花器官自外而内依次是（）。
【单选题】在模式植物拟南芥的一种突变体中，花器官自外而内依次是：心皮、雄蕊、雄蕊、心皮。根据花器官发育的ABC模型，这是（）基因突变的结果。
A.
A类
B.
B类
C.
C类
D.
A类和B类
【简答题】When growing up, I hadn't the slightest curiosity about the authors of books I read; it was the _ that was important. My mother, and sometimes my father. read _ to us every night. I could hardly w...
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