理解

astronauts． The NASA officials thought this was a great idea so they provided a tape recorder． After the man gave them his message, they asked his son to translate． His son would not． Later, they

The troupe, founded in 1948, is famous for their bination of Russian folk dances and classical dancing art. It has been invited by the Beijing Foreign Culture Exchange Co to give four performances in

ds of asteroids whose orbits put them on a collision（碰撞） course with Earth. Buy $50 million worth of new telescopes right now. Then spend $10 million a year for the next 25 years to locate most the

s about work no longer exist C． most people have to take parttime jobs D． people have to change their jobs from time to time 63． What does the author mean by referring to puters and other inventions?

biological explanation C CBC is a famous air pany which has over twenty planes carrying passengers and goods, flying along 12 fixed lines all over the world. Its service is very good but some

ent quality of recording. Background noise hardly affects the sound and recording from a pocket is perfectly possible, but it doesn’t turn off automatically. Tape length: 30 minutes per side. Weight

inly aimed at ________. A. students B. parents C. teachers D. adults C The vitamins necessary for a healthy body are normally supplied by a good mixed diet, including a variety of fruits and green

show. I had watched cosplay shows before but only for fun, she explained. It’s really exciting to see young people wearing the make up and costumes of characters that you’ ve read about and are

身心发展 他们 正处于 1216岁年龄段上。 教育学和心理学把这一阶段称为 “ 少年期 ”。 这段时间上，心理和生理变化比较迅速 ,身心各方面都矛盾重重。 父母要高度重视对这一关键期和危险期的监护和把关。 这一时期他们精力充沛，好奇心强，任何事都想试一试，但他们的愿望与自己的实际能力往往又有很大的矛盾；他们的独立性增强了，总想摆脱对老师和家长的依赖，总认为自己不是孩子了。

量关系式（ 用 “ ＜ ” ， “ ＝ ” ， “ ＞ ” ） m m m m S1＜ S2 S1＝ S2 S1＞ S2 Ⅱ 、 请你在下图中分别画出反映 S1与 S2三种大小关系的直线 n， 并在相应图形下方的横线上分别填写 S1与 S2的数量关系式 （ 用 “ ＜ ” ， “ ＝ ” ， “ ＞ ” 连接 ） . n n n n S1＜ S2 S1＝ S2 S1＞ S2 （