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？？The last sentence in the second paragraph implies that ______？？

A. people should create more natural environment areas
B. people would go on protecting national parks
C. certain areas of countryside should be preserved
D. people should defend the right to live in a peaceful environment

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58

A. if
B. as if
C. though
D. as though

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What Is the Coolest Gas in the Universe？
？？ What isthe coldest air temperature ever recorded on the Earth？ Where was this lowtemperature recorded？ The coldestrecorded temperature on Earth was -91'C , which _____(51) in Antarctica in 1983.？？
？？ Weencounter an interesting situation when we discuss temperatures in_(52)tempera- tures in Earth orbit actually range from about 200C t0 1200C. Thetemperature depends upon ____(53) you are in direct sunlight orshade. Obviously, -1200C is colder than our body can safely endure. Thank NASAscience for well-designed space (54) that protect astronauts fromthese temper-ature ？？？？？？extremes. ？？？？？？
？？ The space temperatures just discussed affectonly our areal of the solar (55). Obviously, it is hotter closer to theSun and colder as we travel away from the Sun Astronomers estimate temperaturesat Plu- to are about -2IOoC. How cold is the lowest estimated temperature inthe entire universe？ Again, it depends upon your _ (56). We are taught it is supposedly_ (57) to have a temperaturebelow absolute zer0, which is -273'C , at which atoms do not move. Two scientists, whose names are Cornell andWieman, have successfully cooled down a gas to a temperature barely____140-(58) absolute zero. They won a NobelPrize in Physics in 2001 for their work-nota discovery, in this case.？？
？？ Why isthe two scientists work so important to science？？？？？
？？ In the1920s, Satyendra Nath Bose was studying an interesting _ (59) about special light particles we nowcall photons. Bose had trouble _____ (60) other scientists to believe histheory, _(61) he contacted AlbertEinstein. Einstein's calculations helped him. theorize that atoms (62) behave as Bose thought-butonly at very cold temperatures.？？
？？ Scientists have also discovered that _(63) atoms can help them makethe world's atomic docks even more accurate. These clocks are so accurate todaythey would only lose one second _(64) six million years ! Such accuracy will. help us travel in spacebecause distance is velocity times time (d = vX t). With the long distancesinvolved in space ____________(65) , we need to know time as accurately aspossible to get accurate distance.？？

A. opened
B. occurred
C. opposed
D. operated

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？？Woodman's flight proved ___________？？

A. Nazca could be seen from a balloon
B. the ancient Peruvians somehow managed to see the drawings from above
C. the ancient Peruvians flew in balloons
D. Nazca was a magnificent sight from the air

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证券公司从事定向资产管理业务，应当自专用证券账户开立之日起()个交易日内，将专用证券账户报证券交易所备案。

A. 3
B. 8
C. 10
D. 15

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？？The last sentence in the second paragraph implies that ______？？

A. people should create more natural environment areas B. people would go on protecting national parks C. certain areas of countryside should be preserved D. people should defend the right to live in a peaceful environment

58

？？Woodman's flight proved ___________？？

证券公司从事定向资产管理业务，应当自专用证券账户开立之日起()个交易日内，将专用证券账户报证券交易所备案。

A. people should create more natural environment areas
B. people would go on protecting national parks
C. certain areas of countryside should be preserved
D. people should defend the right to live in a peaceful environment