某患者,左下4根尖瘘管,患牙根充后行桩冠修复开始时机一般是 ()
A.根充后3天
B.根充后1周
C.根充后3周
D.根充后2个月
E.瘘管闭合后
参考答案:E
根据句意和括号内所给单词的适当形式写出单词。
1. The light is red. You must wait. It's _______ (danger) to cross the road.
2. What's the _______ (mean) of this word, do you know?
3. Jenny is very kind. She often shares her (toy) with her friends.
4. My room is not as big as my _______ (brother).
5. Your sister is too young to dress _______ (she). Please help her, Ann.
分子量调节剂