Birds live in the trees. Squirrels（松鼠） live in the trees. But do you know that some frogs（蛙） live in the trees, too?
The tree frog is hard to find. It can change colors. On green leaves, it stays green. On a brown branch（树枝）,it turns brown. Some tree frogs can change from green to gold（金黄色） or blue.
Tree frogs have legs and wide feet. They have sticky pads（黏性的肉趾） at the end of their toes. These sticky toe pads keep the tree frogs from falling off the trees. Tree frogs have different colors and markings（斑点） on their skins. Their eyes are different, too. Some have green eyes, and others have bright red ones.
The sounds they make are different, too. One frog makes a sound like a dog barking（狗吠）.Another frog makes a loud noise like a snore（打鼾）.There is even a frog that whistles（吹口哨）！
According to the passage, these frogs are hard to find because________.

A．they stay in trees	B．they can change their colors
C．they have sticky pads	D．they make surprising sounds

The color of tree frogs on green leaves is________.

A．gold

B．brown

C．green

D．blue

What sounds can the frogs make?

A．like a dog barking	B．like a snore
C．like a whistle	D．A,B and C

Which of the following sentences is RIGHT?

A．The tree frogs have different colors and markings on their skins.

B．The tree frogs can’t make a loud noise like a snore.

C．We can easily tell tree leaves from tree frogs.

D．We still can’t find tree frogs if we hear a sound like a snore in the forest.

The passage is mainly about________.

A．the colors of a special frog	B．the sounds of a special frog
C．the eyes of a special frog	D．something about tree frogs

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