佛陀与树有什么特殊因缘？
参考答案：
佛在树下出生；树下悟道；在树下说法；在树下涅槃。
用所给词的适当形式填空。
1. She isn't at home. She must ________ (go) to school.
2. It takes us 20 minutes ________ (go) to school by bus.
3. That must be a lot more fun than ________ (ride) the bike.
4. Thank you for ________ (send) me the postcard.
5. I often help my son ________ (do) his homework.
以下事例中，属于汽化现象的是（ ）
A．春天，冰封的河面消融
B．夏天，剥开包装纸后冰棍会冒“白气”
C．冬天，戴眼镜的人从室外进入温暖的室内后镜片上会蒙上一层水珠
D．酒精擦在皮肤上感觉到凉快
