问题
单项选择题
题6图中，电压u为 ( )
A．2V
B．4V
C．6V
D．8V
答案
参考答案：B
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题6图中，电压u为 ( )
A．2V
B．4V
C．6V
D．8V
参考答案：B
| 从方框中选出适当的句子补全对话。 | |
B: __1__ A: Do you have a friend here? B: Yes, I do. A: __2__ B: Oh. She is my friend, Amy. A: __3__ B: She comes from the U. S. A. A: She looks like Judy. B: __4__ A: Are they in the same class ? B: No. They are in the same grade, __5__ |