问题
不定项选择题
下列各组元素属于p区的是 [ ]
A．原子序数为1、2、7的元素
B．O、S、P
C．Fe、Ar、Cl
D．Na、Li、Mg
答案
答案：B
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下列各组元素属于p区的是 [ ]
A．原子序数为1、2、7的元素
B．O、S、P
C．Fe、Ar、Cl
D．Na、Li、Mg
答案：B
| 根据对话内容选出可以填入空白处的最佳选项。有两项为多余选项。 | |
| A: Hello. Is that White's Restaurant? B: Yes. 1______ A: I want to know if you send take-away food. B: Sure. A: I'd like to order something for my lunch. B: 2______ A: I'd like to have beef with potatoes and a hot dog. B: OK. 3______ A: No, thanks. How can I pay you? B: 4______ By the way, what time do you expect your lunch? A: Around 11:30 a.m. B: 5______ A: Oh, yeah. Room 502 in Spring Building. B: Thank you. See you then.
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