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.

Continued greenhouse gas emissions will result in further warming and long-lasting changes to the global climate. This requires the attention of people all over the world. Governments need to consider     1    and taking appropriate actions and measures to reduce greenhouse gas emissions. We as individuals can also reduce our “carbon footprint” by     2    the amount of carbon dioxide our lifestyles produce. It is our responsibility     3    every opportunity to educate everyone about global warming, along with its causes and impacts, because this is the most serious issue affecting all of us on this planet. So what will you do to help?

    4    , the local authorities began to use the media to spread environmental     5    and encourage greater use of clean energy. At the same time, they started to carry out     6    regularly and fine tourist organisations for abuses.     7    these measures, it is believed that the beauty of the Li River will be preserved for generations     8    

The four countries that     1     to the United Kingdom work together in some areas. They use the same flag,     2     as the Union Jack, as well     3     share the same currency and military     4    . However, they also have some differences. For example, England, Wales, Scotland, and Northern Ireland all have different education systems and legal systems. They also have their own     5    , like their own national days and national dishes. And they even have their own football teams for competitions like the World Cup!

(1) Exploring space has already     1    in the fight against world hunger. It has directly resulted in the many satellites that now orbit Earth. A number of the satellites     2     data on land and weather patterns. Then the data     3     (transmit) to scientists on Earth. After careful     4    , the scientists can provide useful     5     and advice for farmers. As a result, space-based science has helped farming in its efforts to grow enough food to feed Earth’s increasing population.

(2) To the public, he was seen as a slightly     6     but kind and funny man. He had a thick moustache and long white hair, which sometimes stood on end     7    he had just received an electric shock. Although he was a     8    , he sometimes forgot things, like his friends’ birthdays. But     9     his peculiarities, he was loved by his friends and neighbours. There is even a story about how he helped a little girl who knocked on his door and asked for help with her homework. In fact, Einstein often     10     people on the street who would stop him and ask him to help explain things.