现有一圆柱容器，安全容量为9.42m2，安全高度300mm，则该容器的直径为（）m。
A.1
B.2
C.3
D.4
参考答案：B
基因型为AAbb和aaBB的两种豌豆杂交得到F1，F1自交得到F2，结果符合孟德尔定律。在F2中与两亲本表现型相同的个体一共占全部子代的[ ]
A．1/4
B．3/4
C．3/8
D．5/8
The teacher asked us ________. [ ]
A. when did I finish my work
B. why didn't we tell him about it earlier
C. what we were interested in
D. where we are going to have our lunch
