There is much debate as to     1     makes a healthy diet. For example, scientists     2     (insist) for years that a big enemy of health is fatty food. However, there is increasing e    3     (证据) that the real driver of poor health is not so much fatty food, as it is sugar. In America, people who receive 25% of their daily calories or more through sugar are twice as likely     4     (die) from heart disease than people who receive less than 10% a day.

Therefore, it is necessary     5     (cut) down the foods that contain high amount of sugar. The American Heart Association     6     (recommend) that we limit ourselves to less than 100-150 calories a day from sugar,     7     is less than what is usually contained in one can of sweet drink or in a single candy bar.

Finally, there is no t    8     (窍门) healthy eating. Rather, healthy eating starts with having a healthy a    9     (态度) towards food. If you are using food mostly for     10     (nutritious), then you are on the right track with your diet. However, if food has become the centre of your life, you might be on the road to bad health. It is up to you to decide.

2 . 阅读下面材料，在空白处填入适当的内容（1个单词）或用括号内单词的正确形式（不超过3个单词）或根据首字母和中文提示填写单词的正确形式。

A smart home is one that     1     (integrate) computers into the structure of the building itself. In this way, many of the things that we now do ourselves will become     2     (自动的). For example, the smart home could control the air conditioning and lights so that you would no longer have to turn     3     (switch) on and off, making your home more energy-efficient. The smart home could also m    4     (监控) itself to make sure that everything is working     5     it should, and send you warnings     6     there is a problem. Such smart homes could even     7     (programm) to detect your health problems, and then give you relevant advice as to the food you should eat or if you should see a doctor. So, in a sense, smart homes will lead us to     8     (live) smarter lives.

This smart technology is not a fantasy. Many of these new     9     (innovate) are already available and being used in some homes. In this sense, the home of tomorrow is already the home of today. Nevertheless, it will take some years     10     most new homes begin to use this new technology.