[填空题]

Over 1 billion people lack adequate housing. These people are found in every country of the world and, indeed, in almost every community. In some cases, they don’t even have a roof over their heads. The problem is huge. Does this mean there is nothing that can be done
According to the people at Habitat (住处) for Humanity International (HFHI), there is plenty that can be done. HFHI was founded in 1976 by Millard and Linda Fuller, millionaires who decided their money could best be spent helping people. Since then, HFHI has helped fix and build homes for tens of thousands of people in the United States and over 30 other countries.
HFHI believes that the homes should not be given as charity; instead, the organization follows a system known as partnership housing: The people who will live in the homes work together with volunteers on the construction and then gradually pay off the basic cost of the homes.
These payments, together with contributions

[填空题]Over 1.5 billion people around the world live without electricity. Finding better ways to bring light to the poor is the goal of researchers like David Irvine-Halliday.
In the late 1990s, the Canadian (36) was working in India when his return flight was (37) . A delay gave him time to take a 14-day hiking (徒步旅行) trip around the country.
One day he looked in the window of a school and (38) how dark it was. This is a common problem for (39) of children around the world.
Many families use kerosene oil lamps (煤油灯). There are many problems with these lamps. They produce only a small (40) of light. They are dangerous to (41) . And they are a big fire danger, causing many (42) and deaths each year. Kerosene costs less than other forms of lighting, but it is still (43) in poor countries. (44) . Finally, he decided to use a bright white LED made in Japan.

[单项选择]

One billion people in the world are short of water. How can this problem be solved Some suggestions have been to desalinate ocean water or to build enormous water pipelines from areas where water is abundant. (Suggestions such as these prove extremely expensive when they are actually used. ) One possibility that scientists are considering is pulling icebergs from either the North Pole or the South Pole to parts of the world with a water shortage. Although many questions must be answered before such a project could be tried, moving icebergs seems a reasonable possibility in the future.
Engineers, mathematicians, and glaciologists from a dozen countries have been considering the iceberg as a future source of water. Saudi Arabia is particularly interested in this project because it has a great water shortage. Scientists estimate that it would take 128 days to transport a large iceberg (about 1/2 square mile) to Saudi Arabia. Yet the iceberg would be completely melted by the
A. Because most of the iceberg is below the surface.
B. Because they are flat and float like table tops.
C. Because only a small portion shows above the water.
D. Because they are closer to the areas that need water.