葡萄胎在清宫术后血β-HCG通常降至正常水平的时间是A．2周 B．4周 C．8周 D

选词填空（每小题2分，满分12分）

at times  make a decision  give up  as a result   divide into  make phone calls

小题1:He got up late. _________ he didn’t catch the bus and went to school late.
小题2:Smoking did harm to Mike’s health. So last year he _______ smoking.
小题3:The cake ________ four parts. Eddie ate the biggest one.
小题4:He kept ________ ___________to  his friends yesterday. 
小题5:In summer we have noodles for dinner ________
小题6:Sorry, I’m afraid  I have difficulty _____________.