胎儿娩出后应在什么部位断扎脐带()。
A.距脐根2~3cm处
B.距脐根3~5cm处
C.距脐根5~10cm处
D.距脐根10~15cm处
E.距脐根15~20cm处
参考答案:E
用所给词的适当形式填空
l. David and John want to join the _______ (swim)club.
2. We need several_______(music)for school Music Festival.
3. What time_______ Alice_______ (take)a shower?
4. My family _______ (have)four people.
5. Let's _______(go)and play the guitar together.
6. Eating fruit can help you ______( keep)healthy.
7. _______(thank)you for______(help) me with rny English.
8. She ________( teach)me math and we like_______(she)very much.
雅典奴隶主民主政治发展到古代世界的高峰是在()。
A.公元前5世纪后半期
B.公元前2世纪
C.2世纪
D.10世纪