文档介绍：模拟测试题1
Part I. Reading Comprehension (40%)
Directions： There are three passages in this part. Each passage is followed by five questions. For each question there are four choices marked A, B, C and D. You should decide on the best choice and mark the corresponding letter on the Answer Sheet with a single line through the center.
第一部分：阅读理解(40分，每题2分)
Passage 1
You are unique. There are billion people in the world but no other person is exactly like you. Besides people, there are millions of other living things. Every living thing is different from each other. Every living thing is a unique combination of characteristics.
Why is each living thing unique? Where do its characteristics come from? Do people receive characteristics from their mothers and fathers? How? The work of Gregor Mendel was especially important to help us to answer these questions.
Mendel studied plants, especially pea plants. In some way they were all the same. For example, they all had flowers. But some had red flowers, and others had white flowers. Some were tall, others were short. Mendel was especially interested in the differences. He wondered why each plant was of certain color, shape, size. He experimented with thousands of pea plants, with a careful record. And he discovered some interesting things. He mated different pea plants. First, he mated a red flower plant with a white flower plant. A