Question

【题目】阅读理解

Frogs are animals that can live both in water and on land．There are more than 5.000 kinds of frogs on the earth．The earliest known frogs lived about 190 million years ago and the frogs today still look the same．Here are some fun things that you might not know about frogs．Enjoy！

The Biggest and the Smallest Frogs

Some frogs can be very big．The biggest kind of frog is the Goliath Frog in West Africa．Its body can be nearly 30cm long，about the size of a large cat．The Gold Frog and the Poison Frog are the smallest frogs in the world．They are less than lem long．Though the Poison Frog is very small，it is not weak at all．It is dangerous．Any animal that eats it will die very soon．

The Best Jumpers

Frogs are very good at jumping．They developed jumping legs so that they would not be eaten by other large animals．Using their big strong legs，most frogs can jump over 20 times their own length．It is like a person jumping over about 30.48m．The Australian Rocket Frog can even jump over 2m，which is 50 times its body length（5.5cm）．That might be the reason why frogs are called the best jumpers on the earth．

The Cryogenic Animal

Some frogs like the Common Wood Frog have a special ability to live in very cold places．When the temperature goes down，they become ice frogs．2／3 of their body water freezes．Their hearts stop，and their breathing stops too．You may think they are dead，but in fact they are not．Maybe we humanscan learn thc way that the frogs do for medical purpose．

【1】The earliest frogs lived about________million years ago．

A．20

B．30

C．50

D．190

【2】The Gold Frog is one of the________frogs on the earth．

A．smallest

B．biggest

C．strongest

D．weakest

【3】________can jump over 2m．

A．The Goliath Frog

B．The Common Wood Frog

C．The Poison Frog

D．The Austrailan Rocket Frog

【4】What will happen to a Common Wood Frog at very low temperatures？

A．It will die very soon．

B．It will be an ice frog．

C．It will become dangerous．

D．It will become very small．

Answer 1

【答案】

【1】D

【2】A

【3】D

【4】B

【解析】

【1】由文章第一段第三句话“The earliest known frogs lived about 190 million years ago…（已知最早的青蛙生活在1.9亿年前……）”可知选D。

【2】由文章第二段第四句话“The Gold Frog and the Poison Frog are the smallest frogs in the world．（金蛙和毒蛙是世界上最小的青蛙。）”可知，Gold Frog是地球上最小的青蛙之一。故选A。

【3】由文章第三段倒数第二句话“The Australian Rocket Frog can even jump over 2m…（澳大利亚的火箭蛙甚至能跳两米多……）”可知选D。

【4】由文章第四段第二句话“When the temperature goes down，they become ice frogs（当气温降低时，它们会变成冰蛙。）”可知，Common Wood Frog在低温下会变成冰蛙。故选B。