A-A+
Acid rain means the precipitation in the form.
问题详情
Acid rain means the precipitation in the form. of rain, snow or hail which is more acidic than normal.
A．Y
B．N
C．NG
参考答案
正确答案：A
解析：该命题是对酸雨进行定义。我们可以从第一部分找答案。第五段有个明显的设问： What is Acid Rain?接下来的回答和命题完全吻合，所以该命题正确。
