New Words：
act [ækt] v. 表演，假装;扮演
actor [ˈæktər] n. 男演员
actress [ˈæktrəs] n. 女演员
Sample Sentences：
The actress acts very well.
He acted the wise man who knew everything and never made mistakes.
Chip wanted to see if he could act like the Princess who couldn't laugh.
Some actors never watch themselves on screen.
She wants to be an actress, but her parents disapprove.
approve [əˈpruːv] v. 批准；赞成；同意
disapprove [ˌdɪsəˈpruːv] vi. 不赞成;反对;不同意
New Words：
shave [ʃeɪv]
n.刮脸；修面；剃须
v.剃（须发）；（尤指）刮脸
mammal [ˈmæml] n. 哺乳动物
Sample Sentences：
The nurse washed and shaved him.
This old man shaved his shaggy black beard this morning.
He had a shave and a bath.
I want a haircut and a shave, please.
Whales are mammals; fish are not.
The bat is the only mammal that can fly.
New Words：
divide [dɪˈvaɪd] v. (使)分开；分配；分割；除
Sample Sentences：
Let us divide the cake into three.
We divided the work between us.
Where the path divides, keep right.
30 divided by 6 is 5.
12 divided by 4 equals 3.
长歌行
[汉]汉乐府
青青园中葵，朝露待日晞。
阳春布德泽，万物生光辉。
常恐秋节至，焜黄华叶衰。
百川东到海，何时复西归？
少壮不努力，老大徒伤悲！
译文
园中的葵菜都郁郁葱葱，晶莹的朝露等待阳光照耀。
春天给大地普施阳光雨露，万物生机盎然欣欣向荣。
常恐那肃杀的秋天来到，树叶儿黄落花草也凋零。
百川奔腾着向东流入大海，何时才能重新返回西境？
年轻力壮的时候不奋发图强，到老来悲伤也没用了。
注释
长歌行：汉乐府曲题。
葵：“葵”作为蔬菜名，指中国古代重要蔬菜之一。
朝露：清晨的露水。
晞：天亮，引申为阳光照耀。
布：布施，给予。 德泽：恩惠。
焜黄：形容草木凋落枯黄的样子。
华（huā）：同“花”。
百川：大河流。
少壮：年轻力壮，指青少年时代。
老大：指年老了，老年。
徒：白白地。
New Words：
disappear [ˌdɪsəˈpɪr] vi. 消失；失踪；离开；绝迹
Sample Sentences：
The dinosaurs disappeared long ago.
The plane disappeared behind a cloud.
When spring comes, the snow and ice disappear.
New Words：
appear [əˈpɪr] v. 出现；显现；呈现
Sample Sentences：
Suddenly a smile appeared on her face.
When did mammals appear on the earth?
A woman appeared at the far end of the street.
This kind of question often appears in the exam.
mammal [ˈmæml] n. 哺乳动物