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）！
小题1: 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小题2: The color of tree frogs on green leaves is________.
A．gold
B．brown
C．green
D．blue小题3:What sounds can the frogs make?
A．like a dog barking
B．like a snore
C．like a whistle
D．A,B and C小题4: 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.小题5: 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
小题1:B
小题2:C
小题3:D
小题4:A
小题5:D
题目分析：本文介绍了一种树蛙。它很难被发现，它可以根据环境改变身体颜色、它们长着腿和宽宽的脚、它们的眼睛和声音也不同。
小题1:推理判断题。从文中The tree frog is hard to find. It can change colors. 可以推断出树蛙很难被发现的原因是它们可以改变颜色，故选B。
小题2:细节理解题。On green leaves, it stays green.在绿色树叶上，它呈现绿色。因此答案应选C。
小题3:推理判断题。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）！文中三种声音都提到，故选D。
小题4:细节理解题。Tree frogs have different colors and markings（斑点） on their skins.选项A的表达与文中此句一样，而其它几项与文中描述不符，故选A。
小题5:主旨大意题。A、B、C三项只是说了树蛙的个别的特点，而D是总括，故选D。