更多"Colds are very common. The symptoms"的相关试题:
[单项选择]Colds are very common. The symptoms of the common cold include a sore throat, runny nose, stuffed-up nose, and tiredness. Colds are caused by viruses, but scientists cannot explain the exact cause. There is no cure. Many people, however, believe that they know the causes of and cures for the common cold. For example, they believe that it is possible to get a cold if we get chilled, if we get extra tired, or if we are too close to a person with a cold. In other words, if we want to prevent catching cold, we should stay warm and dry; we should avoid getting too tired, and we should not be in close contact with people who have colds.
Meanwhile, there are probably hundreds of " cures" throughout the world for the common cold. For example, the following suggestions are popular in quite a number of societies : (1) drink plenty of water; (2) get extra rest; (3) take a lot of vitamin C; (4) take aspirin; (5) keep warm.
Each year people spend a lot of money on cold medicines-pills, li
A. looking for causes of the common cold
B. introducing some cures for the common cold
C. some facts about the common cold
D. new medicines for curing the common cold
[单项选择]Children of poor health are very _______ to colds in winter and should be taken care of particularly.
A. willing
B. ready
C. reluctant
D. prone
[简答题]List any 4 common signs and symptoms of overtrading.
[填空题]Misunderstanding is very common in communication between different cultures, and misinterpretation in this respect may cause ______.
[单项选择]Learning disabilities are very common. They affect perhaps 10 percent of all children. Four times as many boys as girls have learning disabilities.
Since about 1970, new research has helped brain scientists understand these problems better.
Scientists now know there are many different kinds of learning disabilities and that they are caused by many different things. There is no longer any question that all learning disabilities result from differences in the way the brain is organized.
You cannot look all a child and tell if he or she has a learning disability. There is no outward sign of the disorder. So some researchers began looking at the brain itself to learn what might be wrong. In one study, researchers examined the brain of a learning-disabled person, who had died in an accident. They found two unusual things. One involved cells in the left side of the brain, which control language. These cells normally are white. In the learning-disabled person, however, these ce
A. to investigate possible influences on brain development and organization
B. to study how children learn to read and write, and use numbers
C. to help learning-disabled children to develop their intelligence
D. to explore how the left side of the brain functions in language learning
