8．It is very disturbing that we haven't heard from him.

　　我们没有收到他的来信，深感不安。

　　9．He is among the_best_students_to_do the experiment.

　　他是做这个实验最好的学生之一。

　　10．Beijing is ten_times_the_size_of my hometown.

　　北京是我家乡的十倍大。

　　二、勤练高考题型，多练自能生巧

　　Ⅰ.阅读理解

　　You're in a bit of a dilemma standing in front of the produce section of your local supermarket. In one hand, you're holding a conventionally grown Granny Smith apple. In your other hand, you have one that's been organically grown. Both apples are firm, shiny and green. Both provide vitamins and fiber, and both are free of fat, sodium and cholesterol.

　　The conventionally grown apple costs less and is a proven family favorite. But the organic apple has a label that says "USDA Organic". Does that mean it's better? Safer? More nutritious? Become a better informed consumer for your next trip to the supermarket. Several differences between organic and non­organic foods exist. The word "organic" refers to the way farmers grow and process agricultural products, such as fruits, vegetables, grains, dairy products and meat. Organic farming practices are designed to encourage soil and water conservation and reduce pollution. Farmers who grow organic produce and meat don't use conventional methods to fertilize, control weeds or prevent livestock disease.

　　Here are other differences between conventional farming and organic farming：

Conventional farmers Organic farmers Apply chemical fertilizers to promote plant growth. Apply natural fertilizers to feed soil and plants. Apply insecticide to reduce pests and disease. Use beneficial insects and birds to reduce pests and disease. Give animals antibiotics, growth hormones and medications to prevent disease and promote growth. Give animals organic foods and allow them access to the outdoors. Use preventive measures - such as a balanced diet and clean housing - to help minimize disease. 　　*Organic or not Check the label

The U．S. Department of Agriculture (USDA) has established an organic certification program that requires all organic foods to meet strict government standards. These standards regulate how such foods are grown, handled and processed. Any farmer or food manufacturer who labels and sells a product as organic must be USDA certified as meeting these standards. Only producers who sell less than ＄5,000 a year in organic foods are