题目内容
This newly-built centre is stocked with modern technical (设备) for
environmental research.
equipment
The south and east of the Great Lakes is famous for the huge amounts of snow it receives. When the snow starts to fall every year, people start discussing the phrase “lake-effect snow”.
Lake-effect snow which is influenced by the movement of cold air over the relatively warm water of the Great Lakes often comes in late autumn and early winter. Because of the at least 20 degrees’ difference between the lake water and the overrunning air, it’s easy to form huge amounts of snow.
As the cool air crosses the water of Great Lakes, the lowest levels of the atmosphere begin to warm and pick up moisture. This newly warmed atmosphere is lighter than the cold air above it, so it starts rising. As the changed air continues to climb higher and higher, it finally meets much colder atmosphere which changes the moisture into water drops and ice, forming clouds. After this course repeats a number of times, the clouds become heavier and heavier, and then they are changed into snow and fall down.
The most important point that decides the amount of snowfall is the direction of the wind. If the wind runs perpendicularly（垂直地）across the lake, there won’t be plenty of time for clouds to develop. However, if the wind runs in the opposite direction, clouds will form easily. The longer the cold air travels over the lake, the more moisture it is able to produce, which leads to a greater amount of snow.
The largest amount of the lake-effect snow was found across the U.P. of Michigan, the northwestern Pennsylvania and the far southwestern and northwestern New York, which are all along the south or east of the Great Lakes. It has been over 100 inches of snowfall in a winter season.
【小题1】The level of the snowfall depends on ________.
| A．the size of the lake |
| B．the direction of the wind |
| C．the temperature of the lake |
| D．the strength of the wind |
| A．clouds are easy to produce with the help of the perpendicular wind |
| B．cold air always falls down and picks up moisture to form clouds |
| C．the temperature of the lake water is the same as the overrunning air’s above it |
| D．the longer journey of the cold atmosphere can make a grater amount of snow |
| A．the influences of the lake-effect snow for local people |
| B．the weight between moisture and atmosphere |
| C．how the phrase “lake-effect snow” comes in New York |
| D．how the lake-effect snow forms around the Great Lakes |
_____your taste，you can be satisfied in this newly-popened restaurant．
|
A．However |
B．Wherever |
C．Whenever |
D．Whatever |
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AIDS (Acquired Immune Deficiency Syndrome ) is a medical condition caused by HIV (Human Immunodeficiency Virus), a virus which damages people’s natural defenses against disease. So far, no cure has been found for it.
In the early mid-1980s, while other parts of the world were beginning to deal with the serious disease, Asia remained relatively unaffected by this newly discovered health problem. By the early 1990s, however, HIV and AIDS had hit several Asian countries, and by the end of that decade, HIV was spreading rapidly in many areas of the continent. Today, HIV and AIDS are a growing problem in every region of Asia. The latest statistics produced by UNAIDS suggest that in 2008, over 5 million people were living with HIV or AIDS in Asia.
Various factors cause the spread of HIV, including poverty, inequality, unequal status of women, cultural myths about sex and high levels of migration（移民）. Although it’s useful to understand the situation of AIDS in Asia as a whole, each country in the region faces a different situation. In Cambodia and Thailand, there has been evidence of declines in HIV infection levels. In Indonesia, Pakistan and Vietnam, meanwhile, the number of people living with HIV has rapidly increased. In China, the number of people newly infected with HIV and AIDS is also rising although at a much slower pace.
Much improvement is needed to prevent HIV and AIDS around Asia. New guidelines and policy documents have been continually issued over the years. Most of the successful programs do have at least three features in common. Firstly, these programs encourage HIV and AIDS education among the general population to teach people how to avoid infection and to face discrimination. Secondly, they are every practical and they involve the infected people themselves in program design and implementation（实施）. Last but not least, strong leadership is essential for HIV prevention. If all of the leaders truly committed themselves to this cause, them a great many lives would be saved.
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Overview of HIV and AIDS in Asia |
|
|
The (1.) of AIDS |
HIV, a virus(2.) the body’s immune system. |
|
The past situation |
◇In the early mid-1980s, with other parts of the world troubled with the serious disease, Asia remained(3.) unaffected by this newly discovered health problem. ◇In the early 1990s, HIV and AIDS(4.) only several Asian countries, but HIV was spreading rapidly in the next 10 years in Asia. |
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The （5.) situation |
◇AIDS/HIV is a growing problem in every region, over 5 millions people living (6.) HIV or AIDS. ◇Asian courtiers are facing(7.) situations today. |
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The improvement to prevent HIV and AIDS including three (8.) most of the successful programs have in common |
◇(9.) people to be educated about how to avoid infection and face discrimination. ◇being practical and getting the infected people. (10.) in the program design and implementation. ◇Leaders’ taking an active part in the cause. |