10．unemployment　此处意为“在失业率和油价都很高的经济困难时期”，unemployment为名词，意为“失业”，符合语境。

　　Ⅱ.短文改错

　　(2016·太原市高三第二学段测评)Alibaba’s founder Jack Ma, his company has been valued at more than $221 billion of which Ma owned 6%, is put in the top position among China’s wealthiest. But he stays outside the list of the world’s 10 rich people.

　　Fought against a hard life, young Ma still managed to learn English well enough to gain a degree and became a teacher. Afterwards he started a translation agency in which took him to the US, where he introduced to the Internet. His fate was bound to change before he was accidentally appointed to take an American visitor Jerry Yang, a cofounder of Yahoo, in a tour of the Great Wall. The meeting obvious proved to be a turning point for all of them, promoting the birth of Alibaba and the later cooperation with Jerry Yang.

　　答案：第一句：his→whose; owned→owns

　　第二句：rich→richest

　　第三句：Fought→Fighting

　　第四句：去掉in; he后加was

　　第五句：before→when/after; in→to

　　第六句：obvious→obviously; all→both

　　Ⅲ.书面表达

　　(2016·长春市普通高中质检一)假如你是李华，是一位正在英国进行为期一年学习的交换生，因故需向就读学校请假，现请给你的老师Mr. Smith写一封信，内容包括：

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