送煤气前己烘炉的炉子,其炉膛温度超过1073K,即800℃时,可不点火直接送煤气。()
参考答案:对
根据首字母提示,完成下面的对话,每空一词。
A: Look, Li Mei! That's my home.
B: Where?
A: Over there, (1)b the tree.
B: Who's that, Zhang Lin?
A: (2)W one? The man or the woman?
B: The woman under the tree.
A: That's my mother.
B: Is the man in a hat your father?
A: Yes, that's my father. He (3)l very young, doesn't he?
B: Do you (4)h any sister?
A: Yes, but she isn't here. I (5)t she's in the room. Let's go and see her.
B: OK.
在室外跑步,提高臀大肌的伸展性可以使步幅增大。