短文改错

此题要求改正所给短文中的错误。对标有题号的每一行作出判断：如无错误，在该行右边横线上画一个勾（√）；如有错误（每行只有一个错误），则改正：

注意：原行没有错的不要改。

Japan is a beautiful country，covering with many         1. _______

tiny rivers and high mountains.Japan is also a pleased   2. _______

country. It is known for "the land of the cherry blossom 3. _______

（樱花）" because of the spring of the year the cherry   4. _______

trees are so beautiful. Everywhere there are hundred of  5. _______

different kinds of wild flowers.

Where there are not natural gardens，the Japanese        6. _______

has made their own. Because the islands are so hilly     7. _______

there is a great shortage of the soil，so very little bit8. _______

is used. No matter how tiny may be，every home has its   9. _______

own little garden. Japan is a country worthy of a visit. 10. ______

简述跳蚤的生活史和危害作用