题目内容：

 

1.Much work has been done to improve people's living  ______________ (标准).

2.This kind of bamboo is not   ____________ (合适的) for pandas to eat.

3.Boys and girls,   __________ (注意), please. Good news for you!

4.Qian Xuesen, one of China's nuclear(核) industry  _______________(开拓者), devoted most of his lifetime to the development of China's science and technology.

5.The Beijing-Shanghai ____________(高速的) railway has brought lots of changes to Xuzhou.