更多"Environmental scientists are concer"的相关试题:
[单项选择]Why are scientists concerned about the population of California sea otters according to the passage
A. It has been growing at too fast a rate.
B. Its growth rate has been steadily decreasing.
C. Its growth rate is not as fast as that of the Alaska sea otters.
D. It has been greatly reduced by oil spills and other forms of pollution.
[单项选择]American scientists are very concerned about the ozone because ______.
[单项选择]The scientists, (concerned about) the potential hazards, demanded (the latest) research finding (made) (publicly).
A. concerned about
B. the latest
C. made
D. publicly
[单项选择]Scientists are eager to talk with other scientists working on similar problem.
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]Oceanographers are concerned because
A. their knowledge of this phenomenon is limited.
B. they believe the oceans are dying.
C. they fear an invasion from outer space.
D. they have identified thousands of alien webs.
[单项选择]Thepassage is primarily concerned with
A. contrasting the role of domination and courtship in determining the evolution of bird plumage
B. illustrating the effectiveness of a particular approach to categorizing various evolutionary innovations
C. documenting the origins of a currently accepted scientific theory about food and courtship
D. proposing a new explanation for the evolutionary reasons behind the ornamentation of male bird plumage
E. (E)showing that physical adaptation plays an integral role in contributing to species identification of birds
[单项选择]The author is concerned about
A. the fun for amusement.
B. the spending responsibility.
C. the great family destinations.
D. the cost of the admission ticket.
[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
