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A
Wind—even the slightest of winds can prevent frost (霜冻).That’s because wind is like a spoon in your cup of tea: it stirs (搅起)things down and brings down a lot of warm air that often floats just above housetops and trees .
It may seem strange , but ice itself sometimes can protect crops from frost . Some growers actually spray their crops with water on a freezing night . Water freezes quickly on plants and then a strange thing happens . As long as ice stays wet , it can’t get colder than 32°F, a temperaure many plants can stand . By continual spraying water on the ice , the growers keep it from going below 32 degrees even if the air is much colder . This may defeat frost and saves plants .
This strange kind of “ice blanket” works only on plants that are strong
enough to stand the weight of frozen spray . This is used even to protect banana plants on some Central American farms .
If the ice became entirely frozen and dry , suppose what might happen .
The plants might be frozen to death . B.The plants might benefit from it .
C.It might save the plants . D.It might make the plants grow slowly .
Ice can save plants rather than destroy them on condition that they are .
sprayed regularly B.quickly frozen C.not strong enough D.used to frost
The best title would be .
Frost Saves crops B.Ice Battle C.Ice Can Be Nice D.Ice Is Good
In which of the following sentences “stand” has the same meaning as
in the last paragraph ?
He could hardly stand . B.This house stands the test of time .
C.The train stood for an hour . D.He stands in terrible danger .
B
Build the highway and watch the town grow . At first a few shops appear and maybe a restaurant . Then a hotel opens . Eventually new houses are built . A village is born .
This is also how the virtual world has developed . Think of the Internet as the road carrying information between two computers . Think of the World Wide Web as the village . At first it is just a place on the virtual road where travelers meet . More travelers c
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