Peter and Linda, 咱们不是为了考四级而去四级, 我们的目标是真正地去掌握英语, 四六级不一定能代表一个人的英语实际水平, 如果你要真正掌握英语, 你必须6点就起床, 今天你六点起床学英语了吗? Are you thinking in English? Are you talking in English? Are you keeping diary in English? Are you crazy about English?

Let"s hit the road!

●课文

Difficult cultures are some prone to contract certain illnesses because of the food that is characteristic in these cultures.That food is related to illness is not a new discovery.In 1945,government researchers realized that nitrates and nitrites,commonly used to preserve color in meats,and other food additives,caused cancer.Yet,these carcinogenic additives remain in our food,and it becomes more difficult all the time to know which things on the packaging labels of processed food are helpful or harmful.The additives which we eat are not all so direct.

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(＞人＜；)