单选题：in the late 20th century, the consideration of sustainabili

题目内容：

in the late 20th century, the consideration of sustainability was added to those included in the compass
of both structure and function．

参考答案：

答案解析：

Since it is gradually more and more difficult to find oil,

Since it is gradually more and more difficult to find oil, the petroleum scient

分类：英语六级题型：单选题

分类：英语六级题型：单选题

Questionsare based on the following passage.In recent decades, there is a phen

分类：英语六级题型：单选题

Which of the following statements about Mr．Bush is mentioned in this passage?A．M

分类：英语六级题型：单选题

分类：英语六级题型：单选题