for the weekend， including the use of technology （TVs， computers， smartphones and so on）， or even food． Since it began in l975， World Vision Australia， the event's organizer， has raised over A﹩200 million．

　　AIDS /LifeCycle，US

　　Each year， thousands of people ride the 545-mile route from San Francisco to Los Angeles in order to raise money and awareness for HIV （AIDS-related causes． Cyclists make the trip over seven days， stopping each night at designated camps to shower， eat and relax． The mainly male riders are known for their colorful riding sportswear， with some dressing as nuns （修女），cowboys or even in bikinis． The event has raised around﹩l00 million since it began in 200l．

2l．In what way is "Race for life" special？

A．The participants are all women． B．It attracts about 8 million people every year．

C．All the athletes are cancer patients． D．It's a yearly marathon held in London

22．What do the cyclists mainly do in the AIDS /LifeCycle trip？

A．Advertise for a brand sports suit． B．Cycle in the daytime and rest at night．

C．Talk with local cowboys in camps． D．Research into the causes of AIDS．

23．What do the three events have in common？

A．All the participants give something away to the poor．

B．They have all drawn people's attention to diseases．

C．All the participants donate what they have to charity．

D．They are all held to raise money for people in need．

We humans are sweet on sugar. That makes sense. All animals need sugar to live. It ' s the fuel that powers our cells. The world Health Organization recommends that around 10% your daily calories should come from sugar, which is about 35 grams for the average female and 45 grams for the average male. So it' s not surprising that we ' re born to want the sweet stuff.

Sugar stores the sun' s energy like a battery. After a meal, your body breaks down foods into their building blocks. It uses some sugars for energy right away. The rest get stored for the body to

break down later. It ' s a myth that sugar makes you extremely excited, but having a sugary snack can give you a quick burst of energy. That's because the sugars in sweet foods are easy for your body to turn into fuel. When you eat other kinds of foods, like vegetables, it takes longer for your body to break the sugars down.

These days it' s easy to find sweet snacks. Sodas, candy, cakes and even foods that seem healthy , such as yogurt, can be packed with sugar. Food makers add sugar,because they know that to humans, sweet makes everything taste better. Americans eat about 20 teaspoons of extra sugar everyday. That' s way more than what is good for us.

Eating too much sugar can cause more than a stomach-ache. It can make people overweight,

decay the teeth and even cause diabetes. However, experts aren't worried about naturally sweet foods- the problem is added sugar. So go ahead and enjoy a sweet apple or even a sugar-rich carrot that are also full of vitamins and other good stuff.

Even cake is great once in a while , as long as you don ' t overdo it. After all, no one wants life to be dull. And your body needs its fuel!

24.The first two paragraphs are mainly developed by

A.cause and effect B.making comparisons

C.giving examples D.problem and solution

25.People may be tncked into eating too much sugar because .

A.no one wants life to be boring

B.sugar is the fuel for the plants and animals on the Earth

C.so-called healthy food can be packed with sugar

D.we're born to want the sweet stuff

26.What does the author want to stress in Para. 4?

A.We' d better say no to sweet foods.

B.We'd better consume sugar from natural sources.

C.Eating too much sugar is bad for our health.

D.Experts are worried about added sugar.

27.What can be a suitable title for the text?

A.Sugar Is Everywhere. B.Why Does Sugar Make Us Fat?

C.Why Does Sugar Taste So good? D.Sugar Brings Happiness.