试题与答案

第一恒磨牙的牙胚形成时间A.胚胎的第4个月 B.胚胎的第10个月 C.出生后第6个月

题型:单项选择题

题目:

第一恒磨牙的牙胚形成时间

A.胚胎的第4个月

B.胚胎的第10个月

C.出生后第6个月

D.出生后第12个月

E.以上都不是

答案:

参考答案:A

试题推荐
题型:完形填空

词汇运用(本题共10小题,每小题1分,共10分)

小题1:The Yellow River is the __________(two)longest river in China.

小题2: He got a ___________ (bad) result in English this term than last term, he didn’t try his best.

小题3:Do you know which animal has two _____________(stomach)?

小题4:I would like to enjoy the ___________(beautiful)of the sunset.

小题5: Please ask him___________________(not watch) too much TV.

小题6:When I saw this photo, I_____________(think)of my uncle.

小题7:We didn’t enjoy ourselves at the _____________(begin) of the trip because of the heavy traffic.

小题8: Of us all, Kitty has _____________(little) money.

小题9:___________ (join) the school football team, he practises hard even when it rains.

小题10:Thank you for agreeing_______________(let) me go on the class trip, Mr Wu.

查看答案
微信公众账号搜索答案