有必要进行空间探索吗
人类对外部空间着迷已有上千年的历史了。从人类第一次登上月球起至今已有40多年了。现在,有些人认为空间探索完全是浪费时间和金钱。他们指出,数百亿美元用于太空研究,但收获甚微。另外,用于研究的时间和金钱实在难以估计。
然而,任何事物都具有两面性。仍有大多数人认为进行空间探索利大于弊,我也非常赞同他们的观点。许多新产品,如气象、通讯卫星都直接得益于空间研究,使全球受益匪浅,而且人 类从中获得了不少关于太空的知识。
空间探索早巳使人类受益匪浅了,而且我们也相信,将来它会带给人类更多的好处,有些甚至是我们现在无法想像的。太空探索对我们人类来说是个挑战,这也是为什么许多国家不断进行探索的原因之一。
do we need space exploration
man has been fascinated by outer space for thousands of years, it has been almost over forty years since man s first landing on the moon. now, some people believe that space exploration is a sheer waste of time and money. they point out the thct that it cost billions of dollars to can3 on the space research, but a little infrmation was brought back. in addition, the time and money spent on space exploration is too much to calculate.
however, every coin has two sides. there are still a majority of other people who believe that space exploration has more advantages. and i agree with those people. many new products, such as weather and communication satellites, are also products of space programs, and they have benefitted people all over the world. and what s more. scientific knowledge about outer space has been acquired by the mankind.
we benefited a lot from space exploration. we believed that it will bring more benefits in the future, which perhaps we can not even imagine now. space exploration is a challenge to human beings. that s why several nations try hard to carry out space exploration continuously.
GMAT数学词汇收集,几何平面立体
GMAT数学考试满分原则
费费数学宝典(连载十八)
GMAT数学备考策略三步曲
GMAT数学词汇收集,代数基本运算
gmat数学140道真题(2)
gmat数学精解之算术
gmat数学考什么
gmat数学140道真题(3)
短时间提高gmat数学成绩的秘密
gmat数学考试中的两个特性
GMAT数学备考心得
GMAT数学基本概念解读技巧
gmat数学备考如何高效节省时间
GMAT数学单词大汇总(中英对照)4
实现GMAT数学考试高分的八个步骤
gmat数学复习十条tips拿高分
GMAT数学词汇收集,代数数论
GMAT数学词汇收集,几何坐标
gmat数学140道真题(1)
gmat数学应试技巧之数据填充题
数学基础薄弱的考生如何应对GMAT数学考试
GMAT数学单词大汇总(中英对照)2
GMAT数学单词大汇总(中英对照)3
GMAT数学词汇收集,代数数列方程等
GMAT数学词汇收集,代数基本概念
GMAT数学考试短期如何取得51分
GMAT数学备考资料:费费数学宝典详解版(十二)
GMAT数学拿高分把握这五大方法
gmat数学问题求解的5个技巧
| 不限 |
| 英语教案 |
| 英语课件 |
| 英语试题 |
| 不限 |
| 不限 |
| 上册 |
| 下册 |
| 不限 |