补全对话，每空一词

A: Jim, ____you have time this afternoon?

B: Yes, I do. Do you have any ideas?

A: What____ going to the zoo?

B: That's a good____.

A: There are some new ____in the zoo.

B: What are they?

A: Some zebras, giraffes ____ kangaroos.

B: Really? Where are they ____?

A: Well, the zebras are from Africa and the giraffes are from ____, too.

B:____ about the kangaroos?

A: They are from Australia.

B: Well, I really want to see____. I think they are beautiful (美丽的).

A: Yes, let's go there at half____ two in the afternoon. OK?

B: Great！

The students all well ____ (prepare) for the coming exams, so they all believe that they can easily pass them.

如图所示A、B为大小、形状均相同且内壁光滑但用不同材料制成的圆管，竖直固定在相同高度．两个相同的磁性小球，同时从A、B管上端的管口无初速释放，穿过A管的小球比穿过B管的小球先落到地面．下面对两管的描述中可能正确的是(    )

在实验课中，当你得出的实验结论与科学的结论不相符时，应（  ）