目前广泛应用的人类生育控制技术不包括()。
A.避孕
B.人工流产
C.绝育
D.产前优生学诊断
E.克隆
参考答案:E
Many students are ________ chatting online, which wastes them plenty of time.
A.crazy about
B.connected with
C.worried about
D.anxious about
为什么要坚持中 * * 党的领导?