四生是指胎生、卵生、湿生、（）
A、化生
B、旁生
C、往生。
参考答案：A
I would have helped you，but I ________ the whole week.
A．was really occupied
B．really occupied
C．have really occupied
D．will be really occupied
隐形眼镜验配试戴，通常第一片诊断性试戴镜片选择基弧为（）。
A.6.8mm
B.8.6mm
C.13.8mm
D.7.8mm
