羊水的pH值是()
A.7.0~7.4
B.4.5~6.5
C.6.5~7.0
D.3.5~4.5
E.<3
参考答案:A
The mother came in, _____ a cake with ten _____ candles on it and said “Happy Birhtday” to the little girl.
A.carried; lit
B.carried; lighted
C.carrying; lighted
D.carrying; lit
()是原子程有序。有规则排列的物质。
A、晶体
B、非晶体
C、晶格