Oil is an important()material which can be processed into many different products, including plastics.
- A、uncovered
 - B、raw
 - C、fresh
 - D、crude
 
正确答案:B
答案解析:有

微信扫一扫手机做题
Oil is an important()material which can be processed into many different products, including plastics.

微信扫一扫手机做题