每题都有对应标记的A、B、C和D四个选项，请选择最佳选项并在答题卡2的相应字母中间划横线。

For each of them there are four choices marked A, B, C and D. You should decide on the best choice and mark the corresponding letter on Answer Sheet 2 with a single line through the centre.

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请确保网络或任何中间集线器都不会成为瓶颈。

Make sure that the network or any intermediate hubs are not a bottleneck.

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要定义“Customer”中间对象，请执行以下操作

To define the "Customer" intermediate object

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While we've got you up, why don't we get the other guy who's got his hand up there in the middle.

我看到你举手了,请那位坐在中间举手的小伙子说说吧

耶鲁公开课 - 博弈论课程节选

Next, if you're going to sleep, I ask you to sit between two non-sleepers because sometimes what happens, the whole row will topple over.

另外,如果你要睡觉的话,请坐在两个不睡觉的同学中间,因为有时候,整排的人都倒下了

耶鲁公开课 - 基础物理课程节选

It turns out, if you look at those dotted lines, there's an area in the middle, the area between here and here, this little area here, you actually might be just fine shooting to the middle.

请大家看这条虚线,在这两点中间的范围内,就是这个小区间内,从中路射门也是个不错的选择

耶鲁公开课 - 博弈论课程节选