2021年教师资格证（初中）《英语学科知识与教学能力》考试题库-（初中）英语学科知识与教学能力-2021年教师资格证《初中英语学科知识与能力》考前冲刺卷一-

职业资格-教师资格证

单选题-What is one problem with traditional air-conditioning systems?

单选题

A.The chemicals they use sometimes pollute the water supply.

B.They often damage the buildings that they are trying to cool.

C.There are not enough CFCs in the world to cool all the buildings.

D.The method they use to cool water is thought to harm the ozone layer.

我个人认为这个应该是：D

解析：细节题。短文第一段指出传统的空调系统会对环境造成伤害，其中一个危害就是“In addition．the water…using chemicals called chlorofluorocarbons…believed to damage the Earth’s ozone layer”，即在水冷却过程中使用的CFCs会破坏地球的臭氧层。故选D。