首页
登录
职称英语
Light travels very fast. It moves at a speed of 300,000 kilometers a second.
Light travels very fast. It moves at a speed of 300,000 kilometers a second.
游客
2024-07-20
30
管理
问题
Light travels very fast. It moves at a speed of 300,000 kilometers a second. Light reaches us from the moon in less than a second and a half. The moon is about 382,000 kilometers away.
Light from the sun reaches us in 8.5 minutes. The sun is about 149,840,000 kilometers from the earth.
The other stars are farther away than the sun. Light from the nearest star reaches us in about four years. When you look at a star, you do not see its present condition. You see it as it used to be. Light from some stars takes hundreds of years to reach us. We never see a star as it is now. We see it as it was long ago; perhaps hundreds of thousands of years ago.
Astronomers (天文学家) watch the stars through big telescopes. The world’s biggest telescope is in Russia. The next biggest is in-the United States. With these great telescopes astronomers can see stars and other things very far away. Some of these things are not only stars. They are great groups of stars.
选项
A、more time than
B、less time than
C、as much time as
D、less years than
答案
A
解析
本题题干问“比较太阳光和月亮光到达地球的时间”。原文第1段第2句话指出月亮光到达地球大约用1.5秒,原文第2段第1句话指出太阳光到达地球大约用8.5分钟。因此选项A. more time than是正确答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3685866.html
相关试题推荐
随机试题
WhyGirlsNeedtoSwitchontoComputingThegardeniscomi
[img]2022m3x/ct_ve01202001m_eillist_1057_220329[/img][br]BrownHall[originalt
通过抑制磷酸二酯酶而加强心肌收缩力的药物是A:地高辛 B:米力农 C:醛固酮
某类风湿关节炎病人近几天来手、足及膝关节肿胀,疼痛加重,活动后疼痛减轻,伴有食欲
左边给定的是纸盒的外表面,下面哪一项能由它折叠而成?
(2017年5月)工资指导价位在不同职业由()等因素决定。A.经济发展水
人每天为某项具体目的从事某项具体活动,而在这些具体活动中又贯穿着一个根本目的.这
表外流动性是商业银行通过()等金融工具获得资金的能力。A.存款 B.股票
(2017年真题)为治疗儿童多动症开具哌醋甲酯片,每张处方的限量是( )A.3
库存现金盘亏的账务处理中,批准前可能涉及的会计科目有()。A、待处理财产损溢
最新回复
(
0
)