为了建立生态安全和环境友好型社会，提倡低碳生活，下列建议

①草原上要合理进行畜牧养殖；

②加强机动车管理减少尾气污染；

③开发新能源，禁止开采和使用化石燃料；

④减少使用一次性木筷和塑料袋．

其中合理的是（　　）

A．①②③

B．②③④

C．①②④

D．①②③④

阅读短文，从方框中选择适当的词并用其正确形式填空，使短文通顺、意思完整。请将答案填写在答题卡的相应位置。每空限填一词，每词限用一次。方框中有两个词是多余的。

Electricity is of great  小题1: to our life. What would life be like without electricity? “That’s terrible!” most people would say. But it’s life in Ethiopia.

When I was in that country, the power went off  小题2:every few days. This happened not only in small towns, 小题3:even in the capital.

One day when I went to the airport, the power was  小题4:. I didn’t know which flight to take. At the same time, the Internet was of course  小题5: The weather was very hot. To my 小题6:, restaurants only served warm drinks. Time after the sunset, between 6:00 p.m. and 8:30 p.m., was  小题7:. Without any light, I stayed in my room, walking or  小题8: in bed. How boring!

I wondered what 小题9: I would get into if there was no power in America. So I had a try. At 8:30 a.m., I turned off the power. Then I 小题10: nothing but rest at home. Things were not so difficult because it was summer and the sun didn’t set until 8:00 p.m. I’ll try this again in winter, and I hope to learn what I can do without electricity.