enough wind to make the equipment worthwhile. You'll need to do your homework before you make a purchase, but wind power generators could be a great solution for producing clean, low-cost energy.

1. What is the main idea of the first paragraph？

A. Electricity bills can be highly expensive.

B. Most of the electricity in the US comes from fuels.

C. Generating electricity does harm to the environment.

D. Residential wind power generators are useful.

2. What can we infer from the passage？

A. Wind power generators enjoy a lot of benefits.

B. You can place wind power generators wherever you want.

C. Wind power generators are affordable to most families.

D. Wind power generators are an ideal solution for everyone.

3. What attitude might the writer hold towards residential wind power generators？

A. Negative B. Supportive C. Skeptical D. Cautious

4. What is the best title for the passage？

　A. Ways of Fully Using Wind Power B. How to Reduce Your Electricity Bill

　C. Alternative Solution-Wind Power D. Function of Wind Power Generators

七选五

Parents usually teach their children how to cross the street safely, by looking both ways for cars. 1 The city of Honolulu, Hawaii wants everyone to learn that lesson.

　　 2 Beginning on December 24, you will be fined from ＄ 15 to ＄ 99 if you step into a Honolulu street while looking at your phone. Honolulu is the first major U.S. city to ban what is called "distracted walking". It recently passed a law in a seven to two vote. The law says, "No pedestrian shall cross a street or highway while viewing a mobile electronic device." 3

The law includes all electronic devices with screens: cellphone, tablets, gaming devices, digital cameras and laptop computers. 4 Pedestrians may use such devices