[单项选择]A common characteristic of artists and scientists involved in creative work is that ______.


A. they care about the possible reaction to their work
B. public response is one of the primary conceits
C. they are keenly aware of public interest in their work
D. they are indifferent toward response to their work

[单项选择]A common characteristic of artists and scientists involved in creative work is that ______.


A. they care about the possible reaction to their work
B. public response is one of the primary conceits
C. they are keenly aware of public interest in their work
D. they are indifferent toward response to their work

[单项选择]What all artists in common is that ______.


A. they use shapes and colors instead of words
B. they want the public to understand them and get something from their works
C. they want to show the public something that is difficult to explain
D. they want to learn from the public

[单项选择]By 2010, scientists（）a cure for the common cold.
A. will discover
B. will have discovered
C. have discovered
D. will be discovering

[单项选择]Scientists are eager to talk with other scientists working on similar problems．


A. 科学家热衷于与从事类似课题研究的其他科学家交流。
B. 科学家更容易与其他科学家谈话来解决相同的问题。
C. 科学家很乐意在解决类似问题时同其他科学家交流。
D. 科学家更容易就雷同的问题与其他科学家交谈。

[单项选择]Medical scientists believe that


A. tests have been designed to settle the cholesterol dispute
B. drugs have been tested to reduce the amount of the substance in blood
C. low cholesterol foods or anti-cholesterol drugs or both can reduce the chance of a heart attack
D. none of the statements mentioned above is correct

[单项选择]Scientists assume that unrestrained population growth and dwindling resources may force humans to look to the sea for food.
A. unavoidable
B. unexpected
C. unchecked
D. unfortunate

[单项选择]Most scientists agree this outpouring contributes to global warming, which could eventually lead to coastal flooding,______weather, and widespread crop loss.
A. intensive
B. extreme
C. unpleasing
D. unique

[单项选择]The scientists began to accumulate dat


A. A． collectB. handleC. analyzeD. investigate

[单项选择]

Scientists have established that influenza viruses taken from man can cause the disease in animals. In addition, man can catch the disease from animals. In fact, a great number of wild birds seem to carry the virus without showing an evidence of illness. Some scientists concluded that a large family of influenza viruses may have evolved in the bird kingdom, a group that has been on the earth 100 million years and is able to carry the virus without contracting the disease. There is even convincing evidence to show that virus strains are transmitted from place to place and from continent to continent by migrating birds.
It’s known that two influenza viruses can recombine when both are present in an animal at the same time, the result of such recombination is a great variety of strains containing different H and N spikes. This raises the possibility that a human influenza virus can recombine with an influenza virus from a low animal to produce an entirely new s
A. It was first found in a group of very old birds.
B. All the different strains can be found in wild birds.
C. It existed over 100 million years ago.
D. It can survive in many different places.