Question

【题目】 THE LIFE CYCLE

When you plant a seed, does it stay a seed forever? No! Plants and animals grow and change lives.

Many plants begin as seeds. As the seed gets what it needs(water, sunlight, and nutrients from the soil),it begins to grow. The seed turns into a little. It keeps growing until it is a full-grown plant. Then the plant makes new seeds, so that new plants can grow even after the plant grows old and dies. Those seeds will then go through their growth process（过程）.Because seeds go through this process over and over again, it is called a life cycle.

Animals also have life cycles. A frog begins as an egg. When the egg hatches, it turns into a tadpole. The tadpoles grow legs and arms, and finally grow into adult frogs. The adult frogs lay eggs, so that new frogs can live even after the frog grows old and dies.A dog's life cycle is a little different than a frog's, because a dog does not start out as an egg. It is born from its mother's belly. The puppy keeps growing and is finally an adult dog. Then the adult dog might have puppies to continue the life cycle!

Insects like caterpillars go through life cycles, too. Caterpillars begin as eggs. When they hatch, they are larvae. The caterpillar becomes a pupa, and inside of the pupa it turns into an adult. The adult is not a caterpillar; it is a butterfly! Then the butterfly lays eggs, so that new caterpillars and butterflies can live even after the butterfly grows old and dies.Plants and animals don't stay the same throughout their lives, they grow and change through their life cycle.

【1】What do plants begin as?

A.Seeds.B.Eggs.C.Plants.D.Tadpoles.

【2】Which of the following lay eggs?

A.Tadpoles.B.Puppies.C.Butterflies.D.Caterpillars.

【3】Where's a butterfly when it turns into an adult?

A.In the water.B.Inside of the pupa.C.In the soil.D.In its mother's belly.

Answer 1

【答案】

【1】A

【2】C

【3】B

【解析】

文章大意：本文主要介绍了大自然中的生物圈。

【1】细节理解题。根据文章第二段第一行Many plants begin as seeds.可知“植物是由种子开始的”。故选A。

【2】细节理解题。根据文章倒数第一段第三行Then the butterfly lays eggs.可知产卵的是蝴蝶，故选C。

【3】细节理解题。根据倒数第一段第二行inside of the pupa it turns into an adult.可知它是在蛹里成年的，故选B。

阅读理解题中的细节理解题，首先找出问句中的关键词，根据关键词定位到文章具体位置，然后选出正确答案即可。

例如题目2中，关键词是lay eggs，可定位到文章倒数第一段第三行Then the butterfly lays eggs.可知产卵的是蝴蝶，故选C。