考研考试

【单选题】 According to the passage, uranium ore is very dangerous because______
A．it produces radioactive substances after it is dug out
B．it has caused deaths of many miners
C．the mining of it produces dangerous by-products
D．there is a problem in mining techniques

网考网参考答案：C
网考网解析：
第二段第二句提到，在开采铀矿时会产生具有放射性物质的副产品。 查看试题解析出处>>