Passage 14（2020 •绵阳市）
阅读短文，然后在文后思维导图内完成内容摘要,每空不超过三个词，并将答案写在答题卡的相应位置。
A cicada is a large insect. It is about three centimeters long. Like many other insects, it has six legs. On the forehead are two big eyes, between which is a long beak. It uses its beak to drink juice from trees. The adult cicada has two sets of wings which can shake together to produce a high, continuous sound when the weather is hot.
In its whole life, it mainly goes through two stages. In the beginning, when a cicada is under the ground, it is called a baby cicada. It drinks juice from tree roots and it is covered in a hard shell. At this time, it has no wings - just legs. After coming out of the ground, it breaks out of its old shell. Under the old shell is a new shell and four wings. The cicada finds a place in the sun to dry its new shell and wings. Gradually, the baby cicada grows into an adult. After a cicada becomes an adult, it sings loudly in hot summer. That’s why it is called a born singer in nature.
At present, over two thousand kinds of cicadas are distributed (分布) around the world. All of them spend most of their life underground. You can find about four hundred and fifty kinds in Africa. Besides, there are about one hundred and twenty kinds in China. There are also about seven special kinds in the US that stay under the ground for many years.

46. _________
47. _________
48. _________
49. _________
50. _________
【答案】46. appearance    47. two stages    48. wings    49. about 120 kinds    50. in the US
这是一篇说明文，文章主要介绍知了的外貌、生长阶段以及它的种类分布。
46. appearance【解析】根据第一段“it has six legs. On the forehead are two big eyes, between which is a long beak. It uses its beak to drink juice from trees. The adult cicada has two sets of wings which can shake together to produce a high, continuous sound when the weather is hot”可知知了有六条腿、两个大眼睛，一个长嘴，可知在讲述外貌appearance。故答案为appearance。
47. two stages【解析】根据第二段“In its whole life, it mainly goes through two stages. In the beginning, when a cicada is under the ground, it is called a baby cicada…Gradually, the baby cicada grows into an adult. After a cicada becomes an adult, it sings loudly in hot summer. That’s why it is called a born singer in nature.”可知这段在讲述知了生长的两个阶段。故答案为two stages。
48. wings【解析】根据第二段“Under the old shell is a new shell and four wings”可知知了有四个翅膀，four后面填复数名词wings。故答案为wings。
49. about 120 kinds【解析】根据最后一段“Besides, there are about one hundred and twenty kinds in China.”可知在中国有大约一百二十种,此处填数量about 120 kinds。故答案为about 120 kinds。
50. in the US【解析】根据最后一段“There are also about seven special kinds in the US”可知在美国有大约7种，此处填地点状语in the US。故答案为in the US。