五．单词拼写（共6小题；每小题1分，共6分）

1. Tianshan is home to a great d__________ of plants and animals .

2..He didn’t pass the exam d_________ to his laziness.

3.There is no d_________ that the earth is becoming warmer.

4.Tom g_________ through the report before he got into the meeting room.

5.He a_________ himself quickly to the environment.

6.We all wondered why John o_________ the building of a motorway.