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vi. 合作，协力
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第6部分：完形填空（第51～65题，每题1分，共15分）
下面的短文有15处空白，请根据短文内容为每处空白确定1个最佳选项。
Obtaining Drinking Water Tram Air Humidity
Not a plant to be seen, the desert ground is too dry. But the air contains water, and research scientists have found a __________ (51) of obtaining drinking water from air humidity.
“The process we have developed is based exclusively on renewable energy sources __________ (52) thermal solar collectors and photovoltaic（光电的）cells, __________(53) makes this method completely energy-autonomous. It will__________(54) function in regions where there is no electrical infrastructure（基础设施）,” says Siegfried Egner, head of the research team. The principle of the __________(55) is as follows: hygroscopic(（吸湿的）brine（盐水）— saline（含盐的）solution which absorbs moisture—runs down a tower-shaped unit and absorbs water from the air. It is then sucked __________ (56) a tank a few meters off the ground in which a vacuum prevails. Energy from solar collectors __________ (57) up the brine, which is diluted by the water it has __________ (58).
Because of the vacuum, the boiling point of the liquid is lower than it would be under __________ (59) Atmospheric pressure. The evaporated（蒸发的）, non-saline water is condensed and runs down through a completely filled tube in a controlled manner. The gravity of this water column __________ (60) produces the vacuum and so a vacuum pump is not needed. The reconcentrated brine __________ (61) down the tower surface again to absorb moisture from the air.
“The concept is suitable for various water __________ (62). Single-person units and plants supplying water to entire hotels are conceivable,” says Egner. Prototypes have been built for __________ (63) system components air moisture absorption and vacuum evaporation — and the research scientists have already __________ (64) their interplay on a laboratory scale. In a further __________ (65) the researchers in-tend to develop a demonstration facility.
51．A．road B．channel C．way D．path
52．A．in spite of B．because of C．as a result of D．such as
53．A．who B．where C．when D．which
54．A．meanwhile B．therefore C．however D．still
55．A．prospect B．process C．progress D．product
56．A．from B．at C．above D．into
57．A．keeps B．brings C．Breaks D．heats
58．A．attracted B．affected C．allowed D．absorbed
59．A．normal B．Different C．easy D．available
60．A．continuously B．suddenly C．typically D．seriously
61．A．takes B．puts C．flies D．runs
62．A．users B．designers C．owners D．workers
63．A．both B．every C．same D．either
64．A．repaired B．cancelled C．tested D．copied
65．A．instrument B．step C．case D．ground
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