填空题

To tell the truth, this is the most detailed map ______ (已出版的地图).

【参考答案】

that has ever been published

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单项选择题

Computer skills are not terribly important today partly because ______.

A. they can help little to improve students’ learning efficiency
B. new computer skills are being developed all the time
C. computer users can read manuals to learn the new skills
D. basic reading and reasoning skills can be easily learned

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. (45) . His Light Up the World Foundation has now equipped the homes of 25,000 people in 51 countries. Now his aim is to develop a lower-cost lighting system. (46) .

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