____ the risk of a shark attack, you should follow these suggestions.

1. A.
   Reduced
2. B.
   To reduce
3. C.
   To reducing
4. D.
   Reduce

If teens could reduce the salt they take in every day by 3,000 milligrams (mg), they would cut their risk of heart disease and stroke(中风) greatly in adulthood, researchers say.
Based on the results of a computer modeling analysis, researchers found that a 3,000 mg reduction in sodium(钠) by teenagers could reduce hypertension by 30 percent to 43 percent when they become adults.
Hypertension, or high blood pressure, is a common condition that may have no symptoms for years, but can eventually cause serious health conditions, including heart attack and stroke.
Other benefits over time as teens hit 50 years of age include a 7-12 percent reduction in coronary heart disease(冠心病), an 8-14 percent reduction in heart attacks, and a 5-8 percent reduction in stroke.
Fast food typically contains too much sodium. One bag of Nacho Cheese Doritos has 310 milligrams. Pizza is one of the biggest problems for teens when it comes to sodium, according to data from the National Center for Health Statistics.
“The additional benefit of lower salt intake early is that we can hopefully change the expectations of how food should taste, ideally to something slightly less salty,” says Dr. Kirsten Bibbins-Domingo, the lead author of the study and associate professor of medicine at the University of California, San Francisco.
“Most of the salt we eat is not from our salt shaker(盐瓶), but salt that is already added in food that we eat.” she added.
【小题1】Which is a benefit of a low sodium diet according to the text?

If teens could reduce the salt they take in every day by 3,000 milligrams (mg), they would cut their risk of heart disease and stroke(中风) greatly in adulthood, researchers say.

    Based on the results of a computer modeling analysis, researchers found that a 3,000 mg reduction in sodium(钠) by teenagers could reduce hypertension by 30 percent to 43 percent when they become adults.

    Hypertension, or high blood pressure, is a common condition that may have no symptoms for years, but can eventually cause serious health conditions, including heart attack and stroke.

    Other benefits over time as teens hit 50 years of age include a 7-12 percent reduction in coronary heart disease(冠心病), an 8-14 percent reduction in heart attacks, and a 5-8 percent reduction in stroke.

    Fast food typically contains too much sodium. One bag of Nacho Cheese Doritos has 310 milligrams. Pizza is one of the biggest problems for teens when it comes to sodium, according to data from the National Center for Health Statistics.

    “The additional benefit of lower salt intake early is that we can hopefully change the expectations of how food should taste, ideally to something slightly less salty,” says Dr. Kirsten Bibbins-Domingo, the lead author of the study and associate professor of medicine at the University of California, San Francisco.

    “Most of the salt we eat is not from our salt shaker(盐瓶), but salt that is already added in food that we eat.” she added.

1.Which is a benefit of a low sodium diet according to the text?

    A．No risk of heart disease.   B．Smaller chance of stroke.

    C．Low blood pressure.      D．Slightly more heart attacks.

2.According to the text, 3,000 mg less salt intake daily will reduce hypertension by ________ in adulthood.

    A．7%-12%      B．8%-14%      C．30%-43%    D．5%-8%

3.What does Dr Kirsten Bibbins-Domingo mean in the last two paragraphs?

    A．A lower sodium diet can get teenagers used to less salty food.

    B．A good eating habit can help teens have less junk food.

    C．Teens should avoid pizzas and other salty foods.

    D．We can add more salt from our salt shaker to the food.

4.Which of the following can be the best title for the text?

    A．Teens Cutting Salt for Healthier Adulthood

    B．Diet and Health

    C．Sodium Brings Health Concerns

    D．A Cause of Hypertension

If teens could reduce the salt they take in every day by 3,000 milligrams (mg), they would cut their risk of heart disease and stroke(中风) greatly in adulthood, researchers say.
Based on the results of a computer modeling analysis, researchers found that a 3,000 mg reduction in sodium(钠) by teenagers could reduce hypertension by 30 percent to 43 percent when they become adults.
Hypertension, or high blood pressure, is a common condition that may have no symptoms for years, but can eventually cause serious health conditions, including heart attack and stroke.
Other benefits over time as teens hit 50 years of age include a 7-12 percent reduction in coronary heart disease(冠心病), an 8-14 percent reduction in heart attacks, and a 5-8 percent reduction in stroke.
Fast food typically contains too much sodium. One bag of Nacho Cheese Doritos has 310 milligrams. Pizza is one of the biggest problems for teens when it comes to sodium, according to data from the National Center for Health Statistics.
“The additional benefit of lower salt intake early is that we can hopefully change the expectations of how food should taste, ideally to something slightly less salty,” says Dr. Kirsten Bibbins-Domingo, the lead author of the study and associate professor of medicine at the University of California, San Francisco.
“Most of the salt we eat is not from our salt shaker(盐瓶), but salt that is already added in food that we eat.” she added.

1. 1.

   Which is a benefit of a low sodium diet according to the text?

   1. A.
      No risk of heart disease.
   2. B.
      Smaller chance of stroke.
   3. C.
      Low blood pressure.
   4. D.
      Slightly more heart attacks.
2. 2.

   According to the text, 3,000 mg less salt intake daily will reduce hypertension by ________ in adulthood.

   1. A.
      7%-12%
   2. B.
      8%-14%
   3. C.
      30%-43%
   4. D.
      5%-8%
3. 3.

   What does Dr Kirsten Bibbins-Domingo mean in the last two paragraphs?

   1. A.
      A lower sodium diet can get teenagers used to less salty food.
   2. B.
      A good eating habit can help teens have less junk food.
   3. C.
      Teens should avoid pizzas and other salty foods.
   4. D.
      We can add more salt from our salt shaker to the food.
4. 4.

   Which of the following can be the best title for the text?

   1. A.
      Teens Cutting Salt for Healthier Adulthood
   2. B.
      Diet and Health
   3. C.
      Sodium Brings Health Concerns
   4. D.
      A Cause of Hypertension

Last month, the president of the Maldives, Mohamed Nasheed, held an underwater meeting. The purpose of the ocean floor conference? To highlight the effects of global warming on his island nation.

The Maldives, located in the Indian Ocean, is the lowest-lying country on Earth. Melting glaciers and polar ice are causing sea levels to rise, putting the Maldives and other low-lying areas at risk of being swallowed by the sea within the next 100 years.

What can be done? Scientists and leaders from 190 nations will try to figure that out at the United Nations climate change conference next month. The main goal of the meeting is to come up with a new climate agreement for 2012 and beyond. That is when the existing plan, the Kyoto Protocol (《京都议定书》), will expire. The agreement was created in Kyoto, Japan, in 1997. Since then, it has been ratified (正式批准) by 190 nations. The countries promised to limit the amount of greenhouse gases, such as carbon dioxide, that they produced each year.

The debate over who should cut greenhouse emissions (排放) has been going on for years. The US has been hesitant to reduce emissions unless fast-growing nations such as China and India also reduce their use of fossil fuels. In recent months, China has taken steps to be greener. But India has been unwilling to change. It argues that it is unfair for rich nations to ask poorer countries to cut down on emissions.

While world leaders work on a plan in Copenhagen, there are many things you can do to help the planet. You can save fuel by walking or biking instead of riding in a car. You can start a recycling program in your community. You can plant trees. Trees absorb carbon dioxide from the air and give off oxygen.

64. The underlined word “expire” in Paragraph 3 probably means _____.

A. cause trouble            B. go into effect            C. come to an end         D. gain support

65. According to the passage, limiting greenhouse emissions _____.

A. has been a controversial question

B. is well performed in the Maldives

C. will make poor countries poorer

D. means banning carbon dioxide emissions

66. What does the author suggest？

A. Like the Maldives, other island countries should take action.

B. Both the US and India should cut greenhouse emissions.

C. World leaders should focus more on climate change.

D. Everyone should get involved in cutting greenhouse emissions.