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A study showed that 38% foreign students had many close American friends.（)
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更多“A study showed that 38% foreign students had many close American friends.()”相关的问题
第1题
The results of the study showed that ______.
A．unhappy marriages affect the overall condition of heart walls
B．troubled marriages are a direct risk factor for heart disease and stroke
C．troubled marriages strain the heart walls of people with bad hearts
D．unhappy marriages lead to an increase in heart wall thickness
第2题
A．Y
B．N
C．NG
第3题
第4题
A.intensely active brainwave traces
B.subjects"quicker response times
C.complicated memory patterns
D.revival of events in the previous day
第5题
What is the significance of the study talked about in this passage？
A.It proved the assumption on BPA that studies previously．
B.It clarified the high risks that BPA may pose to peoples health．
C.It confirmed the principal source of the substance BPA．
D.It showed whats responsible for the rising level of BPA in humans.
第6题
回答（47）题 查看材料
A.Many adults are interested in matching sounds with letters.
B.The students also practiced reading aloud and spelling.
C.The biggest challenge for many of these kids， scientists say， is matching sounds with letters.
D.Another group in the study who went through a more traditional reading program didn"t show the same progress.
E.The pictures showed all increase in activity in the back of the brain on the left side.
F.They believe that reading without making any noise or linking words to sounds is more efficient.
第7题
回答（48）题 查看材料
A.Many adults are interested in matching sounds with letters.
B.The students also practiced reading aloud and spelling.
C.The biggest challenge for many of these kids， scientists say， is matching sounds with letters.
D.Another group in the study who went through a more traditional reading program didn"t show the same progress.
E.The pictures showed all increase in activity in the back of the brain on the left side.
F.They believe that reading without making any noise or linking words to sounds is more efficient.
第8题
"We still don't know the【C2】______mechanism of the memory process that occurs during sleep, but the【C3】______of this research suggest it is possible to【C4】______up memory consolidation," Karni said.
Long-term memory【C5】______to memories that stay with us for years, such as "what" memories -- a car accident that happened yesterday -- or " how to " memories, such as one's learned【C6】______to play the drums.
Karni, who【C7】______the study in a recent issue of the journal Nature Neuroscience,【C8】______participants to learn a complex thumb-tapping sequence, then【C9】______the study subjects into two groups: one that【C10】______for an hour, and one that didn't. The people who took an afternoon snooze showed【C11】______improvement in their performance by that evening.
"After a night's sleep the two groups were at the same【C12】______, but the group that slept in the afternoon【C13】______much faster than the group that stayed【C14】______," Karni said.
【C15】______, the study also showed just how much【C16】______a 90-minute nap could help lock in long-term memories.
"Daytime sleep can【C17】______the time 'how to' memory becomes【C18】______to interference and forgetting," Karnl said. "【C19】______of 6 to 8 hours, the brain【C20】______the memory during the 90-minute nap. "
【C1】
A．snack
B．nap
C．sleep
D．exercise
第9题
A.The ancient Tell el-Amarna was famous for its art records．
B.The artistic exhibition of ancient Tell el-Amarna was trustworthy．
C.The art records of Tell el-Amarna showed ancient Egyptians real life．
D.Life was really tough for average Egyptians in ancient Tell el-Amarna．
第10题
Chocolate is produced from beans that contain large amounts of natural substances called flavonoids. Flavonoids have been shown to protect the heart and the blood vessels from damage.
Recent studies have linked foods that contain flavonoids with a reduced chance of developing heart disease. These foods include tea, red wine, apples, peanuts and chocolate.
Research has shown that forty grams of milk chocolate contain about four-hundred milligrams of flavonoids. That is about the same amount as in a glass of red wine. The same amount of dark choc-olate contains more than eight-hundred milligrams of flavonoids. That is about the same amount as in a cup of black tea.
A study by researchers at the University of Scranton in Pennsylvania found that the flavonoids in chocolate are more powerful than some vitamins in limiting the damage from fats in the blood. A German study recently showed that the flavonoids in chocolate also could stop damage to blood vessel walls. And a University of California study showed that flavonoids from chocolate produce nitric acid in the blood. Nitric acid helps protect the walls of blood vessels.
A study by Cesar Fraga of the University of Buenos Aires in Argentina confirmed healthy activity in the blood after eating dark chocolate. Carl Keen of the University of California at Davis also carried out studies about flavonoids. The studies showed that foods high in flavonoids may help stop thickening of the blood that can lead to heart attacks or strokes. Mister Keen gave water, cocoa or non-alcoholic red wine to groups of ten men and women. Researchers tested their blood a few hours later. Both the wine and cocoa delayed the time it took for the blood to become solid. Only the cocoa protected platelets in the blood from becoming too sticky and breaking.
What is the main idea of the passage？
A．Eating chocolate might help you lose weight.
B．Eating chocolate might help you develop heart attacks.
C．Eating chocolate is a bad option for fat people.
D．Eating chocolate may help you prevent heart disease.
