as weight gain or heart problems.

　　Sugar can contribute to long­term changes in the body that can affect development and even lead to shorten lives.

　　Different types of sugar have different effects on the human body. Some of the sugar we consume comes from foods we eat － candy, soda, and cookies. But much of the sugar we eat is hidden.

　　Food companies add large amounts of sugar to items we may not classify as sweets.

　　Some pasta sauces, crackers, and even ketchup(番茄酱)

　　have large amounts of sugar. To help cut down on extra sugar consumption, nutrition experts suggest looking at the ingredients on food packages. Ingredients that end in­ose, such as sucrose(蔗糖) and fructose(果糖),

　　are sugars.

　　So are those that include the word syrup(糖浆). Cutting sugar out of the American diet altogether may be difficult. But making the effort to control our nation's sugar cravings will provide for a truly sweeter future.

　　1. Paragraph 3 aims to tell us________.

　　A. how scientists carried out their research

　　B. why scientists often use mice for research

　　C. what researchers have found from the study

　　D. whether the mice like the diet with more sugar

　　2. What can we learn from Paragraph 4?

　　A. Humans will have the same problems as mice.

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