1 . I admire Edison a lot because of his great__________(贡献)to the world. (根据汉语提示单词拼写)

2 . We must apply what we have learned to our daily work because in no case should ________(理论)be separated from practice. (根据汉语提示单词拼写)

3 . Going from junior high school to senior high school is a really big ________ (挑战) . （根据汉语提示单词拼写）

4 . This mass ____________(灭绝) is caused by hunting,   habitat loss and pollution. （根据汉语提示单词拼写）

5 . As a matter of fact, happiness doesn’t lie in how much _____________ (财产) you own. (根据汉语提示单词拼写)

6 . After many years, this coastal area was finally named a national wildlife ____________(保护区) last year. （根据汉语提示单词拼写）

7 . His purpose was to make a ________ (利益) by improving the company’s performance. (根据汉语提示单词拼写)

8 . I'll make________(安排) for you to be met at the airport. （根据汉语提示单词拼写）

9 . It is reported that rapid economic development threatens animal ____________ (栖息地). （根据汉语提示单词拼写）

10 . The ____________ (物种) are in danger of disappearing in the world.   （根据汉语提示单词拼写）