子代不同于亲代的性状主要来自基因重组,下列图解中哪些过程可以发生基因重组()
A.①②④⑤
B.④⑤
C.③⑥
D.①②③④⑤⑥
参考答案:B
The woman was badly injured in the accident but she is still _____ (有意识的).
在窗体上画一个命令按钮,名称为Command1。然后编写如下程序: Private Sub Command1_Click() Dim j As Integer,s As Integer s=1 Dos=s+jj=j+1 Loop Until j>=5 Print s End Sub 程序运行后,单击命令按钮,在窗体上输出的结果是( )。
A.11
B.1
C.16
D.7