[简答题]Some countries are creating policies to deal with the growing e-waste problem.

[单项选择]Many countries face some serious problems of land use, （）result from population growth and the demands of modem technological living.
A. which most
B. most of which
C. most which
D. of most which

[单项选择]Compared with the developed countries, some African countries are left far behind in terms of people’s living standard.（）
A. 与发达国家相比，一些非洲国家在人民生活水平上还相差甚远。
B. 相比较发展过的国家，一些非洲国家的人民生活水平远远落后。
C. 与发达国家相比，在人民生活水平方面一些国家很落后。
D. 就人民生活水平而言，一些非洲国家被落在了发达国家后面。

[单项选择]Some countries are more populous; some have more crime. But in no other country are crime fighters quite so knowledgeable about citizens as in Britain. On January 4th a boastful Home Office detailed the triumphs of the world’s biggest forensic DNA database, which holds samples from more than 5% of the entire population of England and Wales. Recent changes to the rules governing the database mean that it may eventually hold profiles from more than a fifth of all adults.
Once a country starts storing DNA samples from criminals it is hard to resist the urge to expand the collection. When the National DNA Database (NDNAD) was set up, in 1995, samples could only be taken from those charged with "recordable" offences. If a suspect was not tried, or was freed, the sample had to be destroyed and the profile removed from the database.
That law was abandoned in 2001, after two men who had been convicted of murder and rape had their cases overturned on appeal--the DNA evidence against t
A. B．British citizens are quite knowledgeable about DN

[简答题] _______with the developed countries, some African countries are left far behind in terms of people’’s living standard.

[填空题]Some developing countries seek temporary economic growth and development__________________________(以环境为代价).

[填空题]Some European countries are restricting the planting and importation of GM agricultural products because GM crops could pose unique risks to the environment and to health.

[单项选择]Some countries have large numbers of earthquakes. Japan is one of them. Others do not have many; for example, there are few earthquakes in Britain.
There is often a great noise during an earthquake. The earth shakes. Houses fall down. Railway lines are broken. Sometimes many people are killed in an earthquake.
Earthquakes often happen near volcanoes, but this is not always true. The centers of some are under the sea. The bottom of the sea suddenly moves. The powerful forces inside the earth break the rocks. The coast is shaken and great waves appear. These waves travel long distances and rush over the land when they reach it. (42) They are strong enough to break down houses and other buildings; sometimes they break more buildings than the earthquake itself.
What kind of buildings stands up best in an earthquake A building with concrete walls is perhaps the best. A steel frame will make it even stronger. The frame holds the different parts together, and the walls d
A. a building with a steel frame and concrete walls
B. a very tall one
C. a house made of good bricks
D. a house without a roof