A) 请认真阅读下列短文，并根据所读内容填入一个最恰当的单词。
注意：每个空格只填1个单词。
More and more British people are deciding not to eat meat and animal products. As a result, vegetarianism(素食主义) is increasing in the UK. According to the Vegetarian Society, 2000 people are giving up meat and “going veggie(素食)” in Britain every week. There's even a National Vegetarian Week organized every year to encourage people to try a meat-free lifestyle.
Vegetarians and vegans
Vegetarians are people who don't eat or use any animal products. They are becoming more and more common in the UK culture. A recent survey showed that 3 million people (5.7 percent of the country's population) were vegetarians.
A healthy diet
So why are British people cutting out meat? Many are unhappy about the poor treatment of animals and the effects of meat and fish production on the environment. Worries about food safety, for example mad cow disease, also play a part. Others choose to change their eating habits to get healthier. According to the Vegetarian Society, a meat-free diet could help prevent the certain cancers, as well as heart disease and high blood pressure(压力).
Organic(有机的) farming
Another rising trend appears in the UK's food production. They want their food to be organically produced. Organic farmers use very few or no chemicals. Organic meat is produced without the use of drugs. Organically farmed animals also have more living space and more good food. According to the Soil Association, three out of every four UK families now buy some type of organic food.
Vegetarianism is becoming____ in the UK |
Vegetarianism is increasing in the UK ____ more and more British people are choosing to live a meat-free style. The government ____ a National Vegetarian Week every year to encourage people to stop eating meat. |
Vegetarians and vegans | Vegetarians don't eat or use any ____ products. It is reported that the ____ of vegetarians in the UK is about 3 million . |
A healthy diet | Three____ for cutting out meat Some people think the production of meat and fish may harm both the animals themselves and the____ Some people are____ about food safety. They don't think the meat they eat are safe enough. A meat-free diet could help reduce the ____ of the certain cancers, as well as heart disease and high blood pressure. |
Organic farming | Organic farmers use very few or no chemicals. Organic meat is produced without ____ drugs. At present, about 75% of UK families buy some type of organic food. |
，
均在函数
的图象上，则称
为函数
的一组关于原点的中心对称点（
看作同一组），函数
关于原点的中心对称点的组数为