Questions：

1．What goes on four legs in the morning， on two at noon，
and on three in the evening？

什么走路早上用四条腿，中午用两条腿，晚上用三条腿？

2．What do we get if We Cross a woodpecker with a homing
pigeon？

把一只啄木鸟和一只识途的鸽子融合在一起，会得到什么？

3．What question can never be answered by“Yes”？

什么问题永远也不能回答说“是的”？

Keys：

1．People．They crawled when they were babies and walked with two
legs before they had to rely on a crutch¹ in old age．..
是人，他们刚生下来时用四肢爬行，后来用双腿走路，老年时又不
得不依靠拐杖走。

2．A bird that knocks on the door when delivering messages.
将得到一只送信时会敲门的鸟。
3．“Are you asleep？..
“你睡着了吗？”

Notes：

2．woodpecker/>wudpek+/n.啄木鸟