2.The amount of carbon dioxide in the atmosphere has risen by more than 30% in the last 250 years with half of this increase occurring since 1960.

在过去的250年里，大气中的二氧化碳含量已经增加了30%以上，而其中的一半是在1960年以后增加的。 with的复合结构。

With_more_and_more_tress_cut_down,_some animals are facing the danger of dying out.

由于越来越多的树木被砍伐，一些动物正面临着灭绝的危险。 3.Given this data, it seems that the link between human activities and rising global temperatures is not merely a coincidence.

考虑到这一数据，人类活动与正在上升的全球温度之间的关联似乎不仅仅是一个巧合。 given为介词，意为"鉴于；考虑到"。 _Given_his_support,_I think we'll win the election.

如果有他的支持，我想我们会赢得这次选举。 　　

　　1．(教材P5)Because of the greenhouse effect, the Earth is warmed by gases trapped in the atmosphere.

　　由于温室效应，滞留在大气层的气体使地球变暖。

　　trap

　　 (1)vt.使困住；使陷于困境

　　be trapped in ...　　　　 被困在......里面，陷入......

　　trap sb. into doing sth. 诱骗某人做某事

　　①I hear that she is trapped in an unhappy marriage.

　　我听说她陷入不幸的婚姻之中。

　　②They_trapped_her_into_marrying him.

　　他们诱骗她嫁给他。

　　 (2)n.陷阱；夹；圈套；诡计

　　set a trap for　　　　　　 给......设圈套

　　fall into a trap 落入陷阱，落入圈套

　　③He set_a_trap_for_her and she walked straight into it.

　　他给她设了个圈套，她就径直钻了进去。

　　[语境串记]　How many rabbits have you trapped in your special trap this week?

　　这个星期你用特制的捕兽器捉了多少只兔子？

2．(教材P5)Jim, at the moment, you're working in the botanical gardens to save a number of endangered birds.