单项选择

After the drops were placed in the patient's eyes, his pupils became ______ .

A:increased B:decreased C:enlarged D:expanded

What will happen to the engine when oil pressure drops

A:It will be damaged when the engine stops working. B:Very soon it will be severely damaged. C:Serious damage to it is not likely to occur within the first few minutes. D:Damage may occur to the engine when you drive the car at high speed.

Rainbows are formed when sunlight passes through small drops of water in the sky.

{{B}}第三篇{{/B}}

? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? {{B}}Florida Hit by Cold Air Mass{{/B}}
? ?In January, 2003, the eastern two-thirds of the United States was at the mercy of a bitterly cold air mass that has endangered Florida’s citrus trees, choked northern harbors with ice and left bewildered residents of North Carolina’s .Outer Banks digging out of up to a foot of snow.
? ?The ice chill deepened as temperatures fell to the single digits in most of the South, with an unfamiliar dip below the freezing mark as far south as parts of interior South Florida. Temperatures in Florida plunged, with West Palm Beach dropping to a record low of 2 degrees.
? ?"We couldn’t believe how cold it was," smd Martin King, who arrived this week in Orlando from England. "We brought shorts, T-shirt, and I had to go out and buy another coat."
? ?The temperature plunge posed a threat to Florida’s US $9.1 billion-a-year citrus crop, more of which is still on the trees. Growers were hurrying to harvest as much of the fruit as possible before it was damaged by cold.
? ?"Time is of the essence in getting fruit to the plant," said Tom Rogers, a citrus grower who. expected to see damage to oranges and grapefruit at that time.
? ?In Florida, Governor Jeb Bush signed an emergency order to eliminate the weight limit on trucks so citrus growers could get as much fruit to market as possible.
? ?Casey Pace, a spokeswoman for Florida Citrus Mutual, said growers had sprayed trees with sprinklers, which created a layer of ice and helped maintain a temperature near freezing. Citrus frees are considered in danger of damage if the temperature drops below minus 2 degrees Celsius for four hours or mote. Snow ranging from a dusting to up to 30 centimeters blanketed the Carolinas, Tennessee and pans of Virginia.
Which statement is NOT true according to the last paragraph?

A:Sprinklers were used to protect citrus trees from being damaged. B:Citrus trees would be damaged if the temperature drops below minus 2℃ for four hours. C:The Carolinas, Tennessee and parts of Virginia were covered with snow. D:Florida Citrus Mutual sprayed trees with sprinklers for citrus growers.

{{B}}第三篇{{/B}}

? ? ? ? ? ? ? ? ? ? ? {{B}}Florida Hit by Cold Air Mass{{/B}}
? ?In January, 2003, the eastern two thirds of the United States was at the mercy of a bitterly cold air mass that has endangered Florida’s citrus trees, choked 3 northern harbors with ice and leftbewildered residents of North Carolina’s Outer Banks digging out of up to a foot of snow.
? ?The ice chill deepened as temperatures fell to the single digits in most of the South, with an unfamiliar dip below the freezing mark, as far South as parts of interior South Florida. Temperatures in Florida plunged, with West Palm Beach dropping to a record low of 2 degrees.
? ?"We couldn’t believe how cold it was," said Martin King, who arrived this week in Orlando from England "We brought shorts, T-shirt, and I had to go out and buy another coat."
? ?The temperature plunge posed a threat to Florida’s USS 9.1 billion-a-year citrus crop, more of which is still on the trees. Growers were hurrying to harvest as much of the fruit as possible before it was damaged by cold.
? ?"Time is of the essence in getting fruit to the plant," said Tom Rogers, a citrus grower who expected to see damage to oranges and grapefruit at that time.
? ?In Florida, Governor Jeb Bush signed an emergency order to eliminate the weight limit on trucks so citrus growers could get as much fruit to market as possible.
? ?Casey Pace, a spokeswoman for Florida Citrus Mutual, said growers had sprayed trees with sprinklers, which created a layer of ice and helped maintain a temperature near freezing. Citrus trees are considered in danger of damage if the temperature drops below minus 2 degrees Celsius for four hours or more. Snow ranging from a dusting to up to 30 centimeters blanketed the Carolinas, Tennessee and parts of Virginia.
? ?citrus n. 柠檬，柑橘；柑橘属果树
? ?bewilder v. 使迷惑；使为难；……弄糊涂
? ?sprinklern. 洒水器；洒水手
? ?Celsius adj.摄氏的
? ?shorts n. 宽松运动裤；男式短衬裤
Which statement is NOT true according to the last paragraph?

A:Sprinklers were used to protect citrus trees from being damaged. B:Citrus uees would be damaged if the temperature drops below minus 2~C for four hours C:The Carolinas, Tennessee and parts of Virginia were covered with snow. D:Florida Citrus Mutual sprayed trees with sprinklers for citrus growers.

Warm People Likely to Keep Cold at Bay

Staying positive through the cold season could be your best defense against getting ill, new study findings suggest. In an experiment that exposed healthy volunteers to a cold or flu virus, researchers found that people with a generally sunny disposition were less likely to fall ill.
The findings, published in the journal Psychosomatic Medicine, build on evidence that a "positive emotional style" can help ward off the common cold and other illnesses. Researchers believe the reasons may be both objective as in happiness boosting immune function and subjective as in happy people being less troubled by a scratchy throat or runny nose.
"People with a positive emotional style may have different immune responses to the virus," explained lead study author Dr Sheldon Cohen of Carnegie Mellon University in Pittsburgh. "And when they do get a cold, they may interpret their illness as being less severe. "
Cohen and his colleagues had found in a previous study that happier people seemed less susceptible to catching a cold, but some questions remained as to whether the emotional trait itself had the effect.
For the new study, the researchers had 193 healthy adults complete standard measures of personality traits, self-perceived health and emotional "style". Those who tended to be happy, energetic and easy-going were judged as having a positive emotional style, while those who were often unhappy, tense and hostile had a negative style.
The researchers gave them nasal drops containing either a cold virus or a particular flu virus. Over the next six days, the volunteers reported on any aches, pains, sneezing or congestion they had, while the researchers collected objective data, like daily mucus production. Cohen and his colleagues found that based on objective measures of nasal woes, happy people were less likely to develop a cold.
How did the researchers test their volunteers

A:By giving everyone nasal drops containing either a cold virus or a particular flu virus. B:By giving everyone a medicine that help lessen the probability of catching cold. C:By giving everyone an injection boosting immune function. D:By investigating everyone’s characteristics, interests and hobbies.

{{B}}第二篇{{/B}}

? ?
Warm People Likely to Keep Cold at Bay

? ?Staying positive through the cold season could be your best defense against getting ill, new study findings suggest. In an experiment that exposed healthy volunteers to a cold or flu virus, researchers found that people with a generally sunny disposition were less likely to fall ill.
? ?The findings, published in the journal Psychosomatic Medicine, build on evidence that a "positive emotional style" can help ward off the common cold and other illnesses. Researchers believe the reasons may be both objective as in happiness boosting immune function and subjective as in happy people being less troubled by a scratchy throat or runny nose.
? ?"People with a positive emotional style may have different immune responses to the virus. " explained lead study author Dr Sheldon Cohen of Carnegie Mellon University in Pittsburgh. "And when they do get a cold, they may interpret their illness as being less severe. "
? ?Cohen and his colleagues had found in a previous study that happier people seemed less susceptible to catching a cold, but some questions remained as to whether the emotional trait itself had the effect.
? ?For the new study, the researchers had 193 healthy adults completes stand, self-perceived health and emotional "style". Those who tended to be happy, energetic and easy-going were judged as having a positive emotional style, while those who were often unhappy, tense and hostile had anegative style.
? ?The researchers gave them nasal drops containing either a cold virus or a particular flu virus. Over the next six days, the volunteers reported on any aches, pains, sneezing or congestion they had, while the researchers collected objective data, like daily mucus production. Cohen and his colleagues found that based on objective measures of nasal woes, happy people were less likely to develop a cold.
How did the researchers test their volunteers?

A:By giving everyone nasal drops containing either a cold virus or a particular flu virus. B:By giving everyone a medicine that help lessen the probability of catching cold. C:By giving everyone an injection boosting immune function. D:By investigating everyone’s characteristics, interests and hobbies.

{{B}}第三篇{{/B}}

? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?{{B}}Warm People Likely to Keep Cold at Bay{{/B}}
? ?Staying positive through the cold season could be your best defense against getting ill, new study findings suggest. In an experiment that exposed healthy volunteers to a cold or flu virus, researchers found that people with a generally sunny disposition were less likely to fall ill.
? ?The findings, published in the journal Psychosomatic Medicine, build on evidence that a "positive emotional style" can help ward off the common cold and other illnesses. Researchers believe the reasons may be both objective as in happiness boosting immune function and subjective as in happy people being less troubled by a scratchy throat or runny nose.
? ?"People with a positive emotional style may have different immune responses to the virus," explained lead study author Dr Sheldon Cohen of Carnegie Mellon University in Pittsburgh. "And when they do get a cold, they may interpret their illness as being less severe."
? ?Cohen and his colleagues had bound in a previous study that happier people seemed less susceptible to catching a cold, but some questions remained as to whether the emotional trait itself had the effect.
? ?For the new study, the researchers had 193 healthy adults complete standard measures of personality traits, self-perceived health and emotional "style". Those who tended to be happy, energetic and easy-going were judged as having a positive emotional style, while those who were often unhappy, tense and hostile had a negative style.
? ?The researchers gave them nasal drops containing either a cold virus or a particular flu virus. Over the next six days, the volunteers reported on any aches, pains, sneezing or congestion they had, while the researchers collected objective data, like daily mucus production. Cohen and his colleagues found that based on objective measures of nasal woes, happy people were less likely to develop a cold.
How did the researchers test their volunteers?

A:By giving everyone nasal drops containing either a cold virus or a particular flu virus. B:By giving everyone a medicine that help lessen the probability of catching cold. C:By giving everyone an injection boosting immune function. D:By investigating everyone’s characteristics, interests and hobbies.

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