[填空题]

Snow is a subject of great interest to weather experts. Experts sometimes have difficulty in{{U}} (36) {{/U}}where, when or how much snow will fall. One reason is that heavy amounts of snow fall in{{U}} (37) {{/U}}small areas. Another reason is that a small change in temperature can mean the difference between snow and rain. Snow is a form of {{U}} (38) {{/U}}water. It contains many groups of{{U}} (39) {{/U}}ice particles called snow crystals. These crystals grow from water particles in cold clouds. They usually grow around a piece of{{U}} (40) {{/U}}. All snow crystals have six sides, but they grow in different shapes. It{{U}} (41) {{/U}}mainly on the temperature and water levels in the air snow crystals grow in one of two{{U}} (42) {{/U}}--platelike and columnar. Platelike crystals are{{U}} (43) {{/U}}They form when the air temperature is about fifteen degrees below zero Celsius. Columnar snow crystals look like sticks of

[单项选择]Dense snow cover can cause unusually harsh weather patterns to persist. If a severe winter storm blankets the Great Plains, the snow cover reflects the sun’s radiation back into space and thus keeps the temperature of the ground tow. Consequently, cold air moving down from Canada remains cold enough to cause more snowstorms.
Which of the following is a conclusion that can be properly drawn from the information above
A. Winter weather on the Great Plains is the product of unusual movements of air masses.
B. The Great Plains are more likely than other areas to suffer unusually harsh weather patterns.
C. If the Great Plains get more snow than usual early in the winter and the snow remains until the spring thaw, the winter is likely to be colder than usual.
D. Even if the temperatures on the Great Plains are not extremely cold but are just below freezing, a moderate snowstorm will probably turn into a blizzard.
E. (E) The temperature of the ground depends primarily on the thickness of the snow cover.

[填空题]

A．weather
B．great
C．feather
D．ready

[单项选择]下面函数调用语句含有实参的个数为（）。
func((exp1,exp2)，(exp3,exp4,exp5));
A. 1
B. 2
C. 3
D. 5

[填空题]The weather forecast says the weather of tomorrow will be as (bad) ______ as that of today.

[单项选择]
The two things—snow and mountains—which are needed for a ski area are the two things that cause avalanches, large mass of snow and ice crushing down the side of a mountain—often called "White Death."
It was the threat of the avalanche and its record as a killer of man in the western mountains that created the snow ranger. He first started on avalanche control work in the winter of 1937-38 at Alta, Utah, in Wasatch National Forest.
This mountain valley was becoming well known to skiers. It was dangerous. In fact, more than 120 persons had lost their lives in 1936 and another 200 died in 1937 as a result of avalanches before it became a major ski area.
Thus, development of Alta and other major ski resorts in the west was dependent upon controlling the avalanche. The Forest Service set out to do it, and did, with its corps of snow rangers.
It takes many things to make a snow ranger. The snow ranger must be in
A. a college graduate
B. a physicist
C. a geologis
D. a mountaineer