填空题

As local temperatures fluctuate naturally, it is not right to say that the Earth is becoming hotter.

【参考答案】

N

<上一题目录下一题>

热门试题

填空题

Next to coal-burning power plants,______are the second largest U.S. source of carbon dioxide pollution.

填空题

Global warming may cause some natural disasters such as wild fire and drought to become more severe.