Yang Liwei, the nation’s first spaceman, disappointed a lot of Chinese when he said he did not see the wall during his orbit of less than 24 hours in October 2003, giving rise to calls for revisions(修改) in textbooks.

　　But there is a rider: There are many, many structures which can also be seen, such as the Pyramids of Egypt, airports, highways and even Beijing’s Third Ring Road.

　　Undoubtedly, it requires an atmospheric “ perfect storm” in outer space, defined as an altitude of about 350 km and you have to be in the right place at the right time, under the right conditions to spot a particular structure. Chinese-American spaceman Leroy Chiao, who has been on three space flights and is currently coming to the end of his six-month stint(期限) on the joint US-Russian space station, has provided the first photographic evidence of sections of the Great Wall using commercially available equipment.

　　According to Chiao, the chances of shooting the Great Wall area are “maybe once every few days and only during daylight every three months. ” Since late March, Chiao has had just one opportunity to fly over the Great Wall, but the weather was dangerous. He has one last chance before he is scheduled to land in Kazakhstan on April 25—and he will be keeping a sharp lookout.

　　17. Now the education officials “can breathe easy” because they know_____.

　　A. they don’t need to change the textbooks

【山西省2017高考英语二轮复习专题训练：阅读理解（15）】相关文章：

★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (23)

★ 2016高考英语第二轮复习攻略

★ 山西省2017高考英语二轮复习专题训练：阅读理解（22）

★ 【课堂新坐标】2017届高考英语（通用版）二轮复习短文改错专题训练：模式1 缺一词（含解析）

★ 2014届高考英语一轮复习必修1参考答案（外研版）

★ 名师总结高考英语二轮复习需要做好的6件事

★ 【优化方案】2017届高考英语二轮复习全国卷Ⅱ题型重组训练：第3组（含解析）

★ 2014届高考英语一轮复习课时作业(四十五)选修8Module 3《Foreign Food》（外研版）

★ 山西省2017高考英语二轮复习专题训练：阅读理解（35）

★ 湖南省岳阳市2014高考英语一轮单项选择训练题（1）及答案