89.The ability of the Kangaroo
	The zoo built a special eight-foot-high enclosure for its newly acquired kangaroo, but the next morning the animal was found hopping around outside. The height of the fence was increased to 15 feet, but the kangaroo got out again. Exasperated, the zoo director had the height increased to 30 feet, but the kangaroo still escaped. A giraffe asked the kangaroo, "How high do you think they'll build the fence?" 　　"I don't know, " said the kangaroo. "Maybe a thousand feet if they keep leaving the gate unlocked. Notes: 　　(1) enclosure n.围墙 　　(2) kangaroo n.袋鼠 　　(3) exasperated adj.恼火的 Exercises: 根据短文回答下列问题： 　　① What had the zoo newly squired? 　　② Why did the zoo keep increasing the height of the fence? 　　③ How did the zoo director feel about it? 　　④ Why could the animal still escape even when the fence was increased to a height of 30 feet? 　　⑤ What does the passage imply? 89.袋鼠的能力 　　动物园为刚引进的袋鼠建了一个特殊的八英尺高的围墙。但是第二天早上，人们发现这动物在围墙外面蹦跳着。于是围墙高度增加到十五英尺，但袋鼠还是跑了出来。动物园经理甚感恼火，又叫人把围墙高度加到三十英尺，但袋鼠还是逃了出来。一个长颈鹿问袋鼠：“你认为他们会把围墙建到多高？” 　　“我不知道，”袋鼠说，“如果他们继续开着大门，可能要修到一千英尺吧。”

Stupid gate keeper.

练习参考答案：

　　① The zoo had newly acquired a kangaroo.

　　② Because the kangaroo kept getting out of the fence.

　　③ The director felt exasperated.

　　④ Because the door of the fence was not locked.

　　⑤ The passage implies that the zoo was in bad management.

it is really a joke