7. In the face of all these facts， it seems senseless for countries to continue destroying their rainforests.
介词短语in the face of 意思是“面对”。如：

1） They didn't give up in the face of adversity. （面对逆境，他们没有放弃。）

1）He kept his head in the face of flattery. （面对奉承，他保持镇静。）

it seems senseless for sb. to do sth. （对于某人来说做某事是愚蠢的）

it是形式主语，动词不定式真正的主语。这种句式我们已多次碰到过。如：

1） It is important for us to get into contact with them as soon as possible.

（我们尽快与他们取得联系是很重要的。）

2） It seems useless for you to argue further with him. （你再跟他争辩下去似乎是毫无意义的。）

在动词continue的后面既可以用动词不定式也可以用动名词，意思都是“不间断地做某事”。如：

1） It is necessary for us to continue to learn things in life. （我们在生活中不断学习是必要的。）

2） He continued doing his homework. （他继续做家庭作业。）

8. …the government often have no choice but to turn a blind eye.

have no choice but to do sth. （别无选择，只能…），如：

1） I had no choice but to take the last train to go home. （我别无选择，只能乘末班火车回家。）

2）They had no choice but to accept the term. （他们别无选择，只能接受这个条件。）

turn a blind eye （to sth.） （对…视而不见），类似的表达不有turn a deaf ear to sth.，如：

1）He turned a blind eye to the messy room （他对凌乱的房间视而不见。）

2）The manager turned a deaf ear to the customers' complaints about the poor service.

（顾客报怨服务太差，经理对此置若罔闻。）

9. …which they badly need to pay off their foreign debts and purchase foreign equipment and other goods.

badly在本句中用作副词，意思是extremely.如：

1） I am badly in need of advice. （我急需建议。）

2） We need the money badly. （我们非常需要这笔钱。）

pay off的意思是pay all that is owed （清偿）。如：

1） It book him 6 years to pay off the debt.（他花了六年时间才还清那笔债。）

2） He won't be able to pay off a home all his life. （他一辈子也不能付清购买住房所下的钱。）

equipment是不可数名词，不可在其后加s.

goods是复数名词，意思是“商品；货物”。

10. …how to select trees worth exporting and to cut only those trees down while leaving the rest， so that the basic make up of the forest would not be disturbed.

形容词worth后面通常接动名词或名词。如：

1） This book is worth reading. （这本书值得一读。）

2） The equipment is worth 10，000 dollars. （这台设备值一万美元。）

请注意区别worth，worthy和worthwhile：

1） be worth + n. = be worthy of + n.

This matter is worth consideration.

This matter is worthy of consideration.

2） be worth doing = be worthy   of being done

to be done

This matter is worth considering.

This matter is worthy of being considered.

to be considered.

3） It is worthwhile doing sth.

to do sth.

It is worthwhile to consider the matter.

considering the matter.

make-up在句中用作名词，意思是“组成，构造”。如：

1