Life on land probably began about 430 million years ago, though it has existed in the water for perhaps as much as 3,000 million years. When we think of the first thing on land, we probably think of strange animals coming out of the oceans, but in fact no animals could have been living if plants had not been on land first. Plants had to be on land before animals arrived. They supplied the first land animals with the surrounding and food necessity, since they, the plants, are the only form of life that is able to get and store energy.

　　The first plants to exist out of the water were probably certain kinds of algae（海藻）which were followed by other plants that grew close to the ground and needed water in which to reproduce. Once the move to land had been made, however, evolution（進(jìn)化）took place quickly. By the end of 100 million years, plants had developed their roots（根）,and some had got tree-like forms since height was very important in gaining sunlight. About 300 million years ago, much of the world was covered with forests of huge trees. In most ways they were like modern trees. They had roots, leaves, wood, but mostly they had not developed seeds.

The main idea of the first paragraph is ________.

　　A. life on land probably began 430 years ago

　　B. the first animal on land came from oceans

　　C. there wouldn't be animals without plants

　　D. plants are the only form of life that is able to get and store energy

Which of the following statements is true according to the passage?

　　A. Algae has existed for more than 430 million years.

　　B. It is impossible that algae might be the earliest plant on land.

　　C. Plants get food from animals in the oceans.

　　D. Evolution began after animals appeared on land.

Plants with roots appeared about ________ million years ago.

　　A. 430　　　　　B. 300　　　　　 C. 330　　　　　 D. 100

According to the passage, ________ appeared earlier than ________.

　　A. apples; oranges　　　　　　　　 B. oranges; apples

C. oranges; roses　　　　　　　　　D. algae; wheat

【小題1】C

【小題2】A

【小題3】C

【小題4】D


解析:

【小題1】　第一段有這句話：no animals could have been living if plants hadn’t been on land first.

【小題2】　第一段說(shuō)陸地上的生命出現(xiàn)于430 million years ago，第二段說(shuō)海藻是最早的植物。

【小題3】　最早出現(xiàn)的植物在四億三千萬(wàn)年前，一億年后植物開(kāi)始生根，即三億三千萬(wàn)年前。

【小題4】　從第二段最后可知，長(zhǎng)根的植物比結(jié)子的植物要早,因此選D。

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