四六级考试

【单选题】
A、Ozone is not always associated with acid rain.
B．Cold weather would make the effects of pollution worse.

C、Many industries are unwilling to accept responsibility for air pollution.
D．Plants in warm weather are dying faster.

网考网参考答案：B
网考网解析：
[听力原文] What have the scientists noticed from the experiment document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>