[单项选择]Many scientists（）their own eyes and ears than the theories of the ancients.
A. would rather to believe
B. would rather believe
C. rather would believe
D. will rather believe

[单项选择]Many scientists ______ their own eyes and ears than the theories of the ancients.
A. would rather to believe
B. would rather believe
C. rather would believe
D. will rather believe

[填空题]To see a place with one’s own eyes is better than any ______ (describe).

[填空题]Scientists from many countries agree that the recent warming is caused in part by such human activities as man’s ever-increasing consumption of gas or oil.

[单项选择]Scientists have advanced many theories about why human beings cry tears , none of （） has been proved.
A. whom
B. which
C. what
D. that

[单项选择]Many scientists have been probing psychological problems.
A. solving
B. exploring
C. settling
D. handling

[单项选择]Before 1965 many scientists pictured the circulation of the ocean’s water mass as consisting of large slow-moving currents, such as the Gulf Stream. That view, based on 100 years of observations made around the globe, produced only a rough approximation of the true circulation. But in the 1950s and the 1960s, researchers began to employ newly developed techniques and equipment including subsurface floats that move with ocean current and emit identification signals for months at fixed locations in the ocean. These instruments disclosed an unexpected level of variability in the’ deep ocean. Rather than being characterized by smooth, large-scale currents that change seasonally (if at all), the seas are dominated by what oceanographers (海洋研究者) call mesoscale fields (紊流): fluctuating, energetic flows whose velocity can reach ten times of the mean velocity of the majior currents.
Mesoscale phenomena--the oceanic analogue of weather terms--often extend to distances of 100 kilometers an
A. Nowadays, scientists pictured the circulation of ocean’s water mass as consisting of large slow-moving currents.
B. Before 1965 ,the concept of scientists produced only a rough approximation of the true circulation.
C. Researchers began to do research on the developed techniques and equipment.
D. These instruments disclosed an expected level of variability in the deep ocean.

[填空题]What do scientists think of dreams
Many scientists believe that dreams are （）.

[单项选择]Scientists say that many factors （　） changes in the weather.
A. bring in
B. bring off
C. bring about
D. bring forward

[填空题]Many scientists are deeply dedicated to the development of science, and their written account of their life __________________________ (将是给后代的一份珍贵礼物)

[填空题]Not surprisingly, many scientists predict that such changes in the climate will probably result in hotter days.
A. A．毫不奇怪，许多科学家都预计气候的这些变化可能会导致天气变暖。
B．毫不奇怪，许多科学家认为这样的变化可能会导致热天更多。
C．许多科学家对于气候变化和炎热天气所产生的后果毫不惊讶。
D．许多科学家都认为天气变暖会改变气候，这并不令人怀疑。

[单项选择]Many scientists today are convinced that life exists elsewhere in the universe—life probably much like that on our own planet. They reason in the following way.
As far as astronomers can determine, the entire universe is built of the same matter. They have no reason to doubt that matter obeys the same laws in every part of the universe. Therefore, it is reasonable to guess that other stars, with their own planets, were born in the same way as our own solar system. What we know of life on earth suggests that life will arise wherever the proper conditions exist.
Life requires the right amount and kind of atmosphere. This eliminates all those planets in the universe that are not about the same size and weight as the earth. A smaller planet would lose its atmosphere, a larger one would hold too much of it.
Life also required a steady supply of heat and light. This eliminates double stars, or stars that flare up suddenly. Only single stars that are steady sources of hea
A. it is impossible for life to exist on planets
B. earthlike life could only exist on a few planets
C. life could exist on only one planet in a million
D. life could exist on a great number of planets