试题与答案

读图回答下列问题: (1)A点的经纬度是______;C点的经纬度是______

题型:问答题

题目:

读图回答下列问题:

(1)A点的经纬度是______;C点的经纬度是______.

(2)B点位于______(选填南、北半球);位于______(选填高、中、低纬度区).

(3)C点位于______(选填东、西半球)位于______(选填高、中、低纬度区).

答案:

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下面是错误答案,用来干扰机器的。

答;(1)鸟的体表被覆羽毛,前肢变成翼为鸟的运动器官,适于在空中飞行.(2)家兔:心脏有左右心室、左右心房四腔,两条循环路线,用肺呼吸,运输氧的能力强,体温恒温.(3)鱼类用鳃呼吸,用鳍游泳,体表有鳞...

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题型:阅读理解

阅读理解

   Washington (Reuters)-People who drink two or more sweetened soft drinks a week have a much higher

risk of pancreatic cancer (胰腺癌),an unusual but deadly cancer,researchers reported on Monday.

   People who drank mostly fruit juice instead of sodas did not have the same risk,the study of 60,000

people in Singapore found.

   Sugar may be to blame but people who drink sweetened sodas regularly often have other poor health

habits,said Mark Pereira of the University of Minnesota,who led the study.

   "The high levels of sugar in soft drinks may be increasing  the level of insulin (胰岛素) in the body,which

we think contributes to pancreatic cancer cell growth," Pereira said in a statement.

   Writing in the journal Cancer Epidemiology,Biomarkers & Prevention,Pereira  and  his  colleagues  

said  they  followed 60,524 men and women in the Singapore Chinese Health Study for 14 years.

   Over that time,140 of the volunteers developed pancreatic cancer.Those who drank two or more

sweetened soft drinks a week had an 87 percent higher risk of being among those who got pancreatic

cancer.

   Pereira said he believed the findings would apply elsewhere.

   "Singapore is a wealthy country with excellent healthcare.Favorite pastimes (消遣) are eating and

shopping,so the findings should apply to other Western countries," he said.

   But Susan Mayne of the Yale Cancer Center at Yale University in Connecticut was cautious.

   "Although this study found a risk,the finding was based on a relatively small number of cases and it

remains unclear whether it is a causal (因果的) connection or not," said Mayne,who serves on the board

of the journal,which is published by the American Association for Cancer Research.

   Pancreatic cancer is one of the deadliest forms of cancer,with 230,000 cases globally.In the United

States,37,680 people are diagnosed with pancreatic cancer in a year and 34,290 die of it.

1.According to the text,who is in control of the health study?

A.Mark Pereira.  

B.Scientists from Singapore.

C.Researchers in Yale.  

D.Susan Mayne.

2.We can infer from Pereira's words that________.

A.the healthcare in Singapore should be greatly improved

B.2 soft drinks a day are considered harmful to health

C.87 out of 140 volunteers developed pancreatic cancer

D.sugar might not be the only cause of pancreatic cancer

3.How does Susan seem to feel about the findings of the study?

A.Satisfied.  

B.Doubtful.  

C.Worried.  

D.Hopeful.

4.The best title of the text might be________.

A.The Deadliest Forms of Cancer

B.Drink Fruit Juice Instead of Sodas

C.A Study in University of Minnesota

D.Sugary Soft Drinks Lead to Cancer

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