孕妇于妊娠几周开始自觉胎动？（）
A.6～8周
B.9～10周
C.10～12周
D.3～16周
E.18～20周
参考答案：E
星期日小明计划做50道口算题，实际做了80道．实际比计划多做百分之几？
My mother often dumplings for me on weekends.
A. plays B. does C. makes
