20．The author suggests in the passage that 　　　　　　

　　　 A．we should have natural sea salt instead of bleaches white table salt

　　　 B．we should avoid gat of any kind

　　　 C．we should have no more Multivitamin and antioxidant supplements

　　　 D．we should exercise at least two hours every day .

19．From the passage we can conclude that the most important factor in slowing your aging process is 　　　　　　

　　　 A．exercise 　　　　　 B．diet 　　　　　　　　　 C．lifestyle　 　　　　　 D．genetics

18．The passage is mainly about 　　　　　　.

　　　 A．How to live a healthier life 　　B．how to lower your biological age

　　　 C．How to keep young 　　　　　D．how to select a good diet

17．The polling was carried out through 　　　　　　.

　　　 A．interviews 　　　　 B．letters 　　　　　　　 C．phones 　　　　　　 D．media

E

Would you like to know if your body is older or younger than it should be ? Dr David Wikenheiser has been studying ageing in Vancouver , Canada , for the past 10 years and has found the average person is 15 or more years older biologically than their actual age .

He says: “We all know people who are 30 but look over 40 , and others who are 70 yet look 50 . the difference comes down to lifestyle . Some peoples’ bodies get ‘rusty(生锈)’ faster than others , and this makes them age more quickly .”

After conducting more than 3,000 tests , Dr Wikenheiser believes that , on average , you can lower your biological age by 10 years in three months with the right lifestyle changes .

“You can’t change your genetics (遗传学)but you can make other changes such as eating the right food , drinking enough water to flush out toxins (毒素), exercising and managing stress.” he says .

But exercising too much is just as bad as not doing enough . Working out for more than two hours at a time every day puts too great a strain on your heart .

“Multivitamin and antioxidant supplements are important even if you’re eating the right amount of fruit and vegetables . Today’s soil tends to lack important minerals so these are no longer found in the food we eat , in large enough quantities . We should also change bleached (漂白)white table salt for natural sea salt which is much better for us .”

It’s also important to eat three meals a day . Missed meals put a strain on your brain as your blood sugar level drops . Many of us are also eating the wrong fats or avoiding fat altogether , so we miss out important nutritional(营养)oils .

16．With time going by , the sentiment (情绪) is slightly down by the end of September . But the latest poll shows 　　　　　　.

　　　 A．support remains fairly strong for US military action to disarm Iraq and remove Saddam

　　　 B．most Americans are confident that a violation of the UN inspection team will lead to war

　　　 C．there is a steady rise at the number of the supporters

　　　 D．few people think the US should attack Iraq with the UN’s agreement

15．The public’s doubt about Iraq’s cooperation shows that 　　　　　　.

　　　 A．only a few people believe his country will be at war

　　　 B．a large majority of the public believe the country will soon be at war

　　　 C．most Americans believe there will be no war

　　　 D．most Americans are not sure about the present situation

14．What is the passage mainly about ?

　　　 A．Uses of polling .　　　　　　　　　　　　　　　　　　　　　 B．Dangers of war

　　　 C．Public opinions about the political situation 　　D．Problems caused by war .

3．How confident are you that the UN inspection team will actually announce violations (违反) by Iraq , knowing that a violation could possibly lead to war ?

2．How confident are you that Iraqi President Saddam Hussein will cooperate fully with the UN inspection team .

1．Do you support or oppose U.S military action to disarm (解除武装)Iraq and remove Iraqi President Saddam Hussein .