[简答题]A serious transportation crisis is facing developing countries in which rapidly growing cities are creating new transportation needs. Conversely, non-motorized form of transportation like bicycles and tricycles are seen images of backwardness. In some countries, governments are trying to sup press their use.

[简答题]A serious transportation crisis is facing developing countries in which rapidly growing cities are creating new transportation needs. Conversely, non-motorized form of transportation like bicycles and tricycles are seen images of backwardness. In some countries, governments are trying to sup press their use.

[简答题]Energy crisis is one of the main problems facing the world today. 2. Importance of energy. 3. Conserving energy.

[填空题]Hugh Pendy:
We are facing a serious energy crisis. All known reserves of coal, oil and gas will be exhausted within ten years. It is urgent and imperative that we develop new sources of energy immediately. Nuclear power is the answer to our problems. If we don’t build nuclear power stations now, our civilization will collapse. The Government has decided to build a nuclear power station to solve the energy problem we are facing. I am for this wise decision.
Maureen Preston:
We can’t allow this power station to be built. It would cause terrible damage to the environment and all living creatures in the district would be in great danger. A small leak would cause a disaster. It’s our duty as responsible citizens to force the Government to abandon their unclear energy program. I used to believe nuclear power station were safe. But last month I read a newspaper report that there were at least five major leaks in the last two years in other stations. In each case

[填空题] Peter White:
We’re facing a serious energy crisis. All known reserves of coal, oil and gas will be exhausted within ten years. It is imperative that we develop new sources of energy immediately. Nuclear power is the answer to our problems. If we don’t build nuclear power station now, our civilization will collapse.
Bob Robin:
We can’t allow this power station to be built. I’ll tell you why. It would cause terrible damage to the environment and all living creatures in the district would be in great danger. A small leak could cause a disaster. It is our duty as responsible citizens to force the government to abandon their nuclear energy program.
Mark Brewer:
This power station will be absolutely safe. They’ll be no danger of leakage because the reactor will be housed in a concrete box with wails six meters thick. Five independent alarm systems will monitor every square centimeter of the power station to prevent fire or sabotage.

[填空题]By 2000, life expectancy at birth in most developing countries increased from about 35-40 years in 1950 to ______.

[填空题]Heart disease is a main cause of death in developing countries.