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.