www射-国产免费一级-欧美福利-亚洲成人福利-成人一区在线观看-亚州成人

USEUROPEAFRICAASIA 中文雙語Fran?ais
China
Home / China / Education

Astronomer points out enrichment book gaffe

By China Daily | chinadaily.com.cn | Updated: 2017-08-01 16:53

An astronomer in Shanghai has voiced his concerns over an exercise in an enrichment book that requires primary school students to document their observations of the moon.

According to the Xinmin Evening News, first-grade students are required to observe the shape of the moon between 7 pm and 9 pm for 28 consecutive nights in order to complete the task.

Tang Haiming, secretary general of the Shanghai Astronomical Society, was quoted as saying that the task is misleading because the moon rises at a different time every day. For example, people living in Shanghai were able to see the moon rise at 9:04 pm on July 12 and descend at 7:32 am the next day. On July 13, moonrise took place at 9:42 pm and moonset was at 8:32 am the next morning.

The difference in timing was greater on July 23 when moonrise was at 4:36 am. Moonset, on the other hand, was at 6:43 pm.

"It's a shame that the editors do not have enough knowledge about the science that led to such a mistake in a science book," said Tang.

He Qi in Shanghai contributed to this story.

Editor's picks
Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
 
主站蜘蛛池模板: 国产成人精品一区二三区在线观看 | 热re91久久精品国产91热 | 日本精品一区二区三区在线 | 精品一区二区三区的国产在线观看 | 国产乱子精品免费视观看片 | 国产在线视频精品视频免费看 | 国产精品拍拍拍福利在线观看 | 国产亚洲高清在线精品不卡 | 一区二区三区欧美日韩国产 | 国产成人福利视频在线观看 | 草草影院私人免费入口 | 男女一级 | 男人的天堂欧美精品色偷偷 | 成人18免费视频 | 午夜国产精品久久久久 | 亚洲a网 | 久久国产首页 | 91伦理视频 | 成年女人黄小视频 | 久久视屏这里只有精品6国产 | 思思久热re6这里有精品 | 波野多结衣在线观看 | 国产精品免费视频能看 | 加勒比一本大道香蕉在线视频 | 日韩在线看片中文字幕不卡 | 国产精品亚洲精品日韩已满 | 国产香蕉影视院 | 国产一区二区高清在线 | 国产成人永久免费视频 | 人成精品 | 又黄又www | 亚洲欧美在线观看播放 | 成人免费久久精品国产片久久影院 | 国产成人啪精品视频免费网 | 亚洲欧美日韩色 | 男女国产 | 久青草国产97香蕉在线视频xx | 在线观看日本永久免费视频 | 农村三级孕妇视频在线 | 欧美一级毛片免费观看视频 | 欧美亚洲国产成人综合在线 |