1 . Pollution is not the problem of one country, but a g_____ one.

3 . 我以为这药会让他入睡，但效果去截然相反。
I thought the medicine would make him sleep, but it had the o ______ effect.

4 . 在他的书房人们发现了这封他写给他唯一女儿的亲笔信，信封里还有一张他们 30 年前的合影。
In his study, they found a h ______ letter he had written to his only daughter, along with a photo of them taken 30 years ago.

5 . It's sometimes e_______(尴尬) when you have to ask people for money. (根据中英文提示单词拼写)

7 . He trekked across some of the most i__________(荒凉的、不宜居的)terrain in the world.

8 . There is a f______(基本的、根本的)difference between the two points of view.

9 . How to protect the _______ ecosystem was among the top _______.
其中，如何保护脆弱的生态系统是需要我们高度重视的问题之一。

10 . What makes us       is that the number of students        to computer games is increasing.

A．worrying, addicted	B．worrying, addictive
C．worried, addictive	D．worried, addicted