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 intend to develop a demonstration facility．

A:who B:where C:when D:which

One useful anti-cancer drug can effectively erase the whorls(萝状指纹)and other characteristic marks that give people their distinctive fingerprints．Losing them could become troublesome．A case (51) online in a letter by Annals of Oncology indicates how big a (52) losing finger prints is．
Eng-Huat Tan，a Singapore-based medical doctor describes a 62-year-old man who has used capecitabine(卡培他滨)to (53) his nasopharyngeal cancer(鼻咽症)．After three years on the (54) ，the patient decided to visit his U．S．relatives last December．But he was stopped by U．S． customs officials (55) 4 hours after entering the country when those officials couldn’t get finger prints from the man．There were no (56) swirly(旋涡状的)marks appearing from his index fin ger．
U．S．customs has been fingerprinting incoming foreign visitors for years，Tan says．Unfortunately， for the Singaporean traveler，one potential (57) effect of his drug treatment is a smoothing of the tissue on the finger pads． (58) ，no fingerprints．
“It is uncertain when fingerprint (59) will begin to take place in patients who are taking capecitabine，”Tan points out．So he (60) any physicians who prescribe the drug to provide their patients with a doctor’s (61) pointing Out that their medicine may cause fingerprints to disappear．
Eventually，the Singaporean traveler made it into the United States．But he’s also now got the explanatory doctor’s note-and won’t leave home (62) it．
By the way，maybe the Food and Drug Administration， (63) approved use of the drug 11 years ago，should consider updating its list of side effects (64) with this medicine．The current list does note that patients may experience vomiting(呕吐)，stomach pain and some other side effects． But no where (65) it mention the potential for loss of fingerprints．

A:who B:when C:which D:where

One useful anti-cancer drug can effectively erase the whorls and other characteristic marks that give people their distinctive fingerprints. Losing (51) become troublesome. A case released online in a letter by Annals of Oncology indicates how big a (52) of losing fingerprints is.
Eng-Huat Tan, a Singapore-based medical doctor describes a 62-year old man who has used capecitabine to (53) his nasopharyngeal cancer. After three years on the (54) , the patient decided to visit U.S. relatives last December. But he was stopped by U.S customs officials (55) 4 hours after entering the country when those officials couldn’t get fingerprints from the man. There were no distinctive swirly (56) appearing from his index finger.
U.S. customs has been fingerprinting incoming foreign visitors for years, Tan says. Their index fingers are (57) and screened against digital files of the fingerprints of bad guys—terrorists and potential criminals that our federal guardians have been tasked with keeping out of the country. Unfortunately, for the Singapore travelers, one potential (58) effect of his drug treatment is a smoothing of the tissue on the finger pads. (59) , no fingerprints.
"It is uncertain when fingerprint loss will (60) to take place in patients who are taking capecitabine," Tan points out. So he cautions any physicians who (61) the drug to provide their patients with a doctor’s note pointing out that their medicine may cause fingerprints to disappear.
Eventually, the Singapore traveler made it into the United States. I guess the name on his passport didn’t raise any red flags. But he’s also now got the explanatory doctor’s note-and won’t leave home (62) it.
By the way, maybe the Food and Drug Administration, (63) approved use of the drug years ago, should consider (64) its list of side effects associated with this medicine. The current list does note that patients may experience vomiting, stomach pain and some other side effects. But no where (65) it mention the potential for loss of fingerprints.

A:who B:where C:when D:which

One useful anti-cancer drug can effectively erase the whorls and other characteristic marks that give people their distinctive fingerprints. Losing them could become troublesome. A case (51) online in a letter by Annals of Oncology (肿瘤学) indicates how big a (52) of losing fingerprints is.
Eng-Huat Tan, a Singapore-based medical doctor describes a 62-year-old man who has used capecitabine to (53) his nasopharyngeal cancer (鼻咽喉). After three years on the (54) , the patient decided to visit U. S. relatives last December. But he was stopped by U. S. customs officials (55) 4 hours after entering the country when those officials couldn’t get fingerprints from the man. There were no (56) swirly marks appearing from his index finger.
"U. S. customs has been fingerprinting incoming foreign visitors for years." Tan says. "unfortunately, for the Singaporean traveler, one potential (57) effect of his drug treatment is a smoothing of the tissue on the finger pads. (58) , no fingerprints."
"It is uncertain when fingerprint (59) will begin to take place in patients who are taking capecitabine," Tan points out. So he (60) any physicians who prescribe the drug to provide their patients with a doctor’s (61) pointing out that their medicine may cause fingerprints to disappear.
Eventually, the Singapore traveler made it into the United States. I guess the name on his passport didn’t raise any red flags. But he’s also now got the explanatory doctor’s note-and won’t leave home (62) it.
By the way, maybe the Food and Drug Administration (美国食品药物管理局), (63) approved use of the drug 11 years ago, should consider updating its list of side effects (64) with this medicine. The current list does note that patients may experience vomiting (呕吐), stomach pain and some other side effects. But no where (65) it mention the potential for loss of fingerprints.

A:who B:when C:which D:where

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 system is based completely on renewable energy and is therefore autonomous.
Cracks permeate the dried-out desert ground and the landscape bears testimony to the lack of water. But even here, where there are no lakes, rivers or groundwater, considerable quantities of water are stored in the air. In the Negev desert in Israel, for example; annual average relative air humidity is 64 percent-in every cubic meter of air there aye 11.5 milliliters of water.
German research scientists have found a way of converting this air humidity autonomously into drinkable water. "The process we have developed is based exclusively on renewable energy sources (52) thermal solar collectors and photovoltaic ceils, (53) makes this method completely energy-autonomous. It (54) will function in regions where there is no electrical infrastructure." says Siegfried Egner, head of the research team. The principle of the (55) is as follows: hygroscopic brine-saline 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 collector (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. This effect is known from the mountains: as the atmospheric pressure there is lower than in the valley, water boils at temperatures distinctly below 100℃. The evaporated, 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 intend to develop a demonstration facility.

A:who B:where C:when D:which

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。

A:who B:where C:when D:which

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。

A:who B:when C:which D:where

One useful anti-cancer drug can effectively erase the whorls and other characteristic marks that give people their distinctive fingerprints. Losing (1) could become troublesome. A case released online in a letter by Annals of Oncology indicates how big a (2) of losing fingerprints is.
Eng-Huat Tan, a Singapore-based medical doctor describes a 62-year old man who has used capecitabine to (3) his nasopharyngeal cancer. After three years on the (4) . the patient decided to visit U. S. relatives last December. But he was stopped by U. S. customs officials (5) 4 hours after entering the country when those officials couldn’t get fingerpints from the man. There were no distinctive swirly (6) appearing from his index finger.
U. S. customs has been fingerprinting incoming foreign visitors for years, Tan says. Their index fingers are (7) and screened against digital files of the fingerprints of bad guys-terrorists and potential criminals that our federal guardians have been tasked with keeping out of the country. Unfortunately, for the Singaporean traveler, one potential (8) effect of his drug treatment is a smoothing of the tissue on the finger pads. (9) , no fingerprints.
"It is uncertain when fingerprint loss will (10) to take place in patients who are taking capecitabine, " Tan points out. So he cautions any physicians who (11) the drug to provide their patients with a doctor’s note pointing out that their medicine may cause fingerprints to disappear.
Eventually, the Singapore traveler made it into the United States. I guess the name on his passport didn’t raise any red flags. But he’s also now got the explanatory doctor’s note — and won’t leave home (12) it.
By the way, maybe the Food and Drug Administration, (13) approved use of the drug 11 years ago, should consider (14) its list of side effects associated with this medicine. The current list does note that patients may experience vomiting, stomach pain and some other side effects. But no where (15) it mention the potential for loss of fingerprints.

13（）

A:who B:where C:when D:which

Smiling is the universal sign for goodwill, and it reduces social tension. I went to a job interview when I was about 18, and I was so nervous that I could (51) keep myself from (52) . After five minutes, the (53) said the manager would meet me. I moved slowly (54) the manager’s office door and opened it (55) . There, standing behind his desk with his hand outstretched in greeting, was a man (56) about 50, and he was grinning(露齿而笑)from ear to ear. "Come in and have a seat, David," he said. He shook my hand and told me that he was happy I had come. It wasn’t long before my anxiety inched away in the glow of his bright smile and warm (57) . When I left that meeting with my new job, I couldn’t remember why I had been so afraid (58) . A warm smile made all the (59) .
In some cultures, eye contact is a sign of aggression especially (60) it is made between inferiors(下级) and superiors(上级), but in most western countries it is a (61) of honesty and goodwill. Eye contact simply means to look at someone directly into their eyes. (62) staring long into someone else’s eyes can be (63) as something inappropriate if that person is not a loved one, making proper eye contact (64) the greeting ritual is absolutely necessary. In western countries, a person who cannot or will not make eye contact is perceived (理解) (65) dishonest. Remember, during the greeting ritual, you must make eye contact.

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(3)

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