单项选择题

Questions 29 and 30 are based on the following news.
Travelers in the low-Earth orbit can do the following activities EXCEPT

A. meeting NASA astronaut Neil Armstrong.
B. seeing the sun rise many times a day.
C. experiencing the curve of planet Earth.
D. checking in to an orbiting hotel.

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单项选择题

The civil war in Nepal probably lasted for

A. more than 20 years.
B. 12 years.
C. 20 years.

D. 10 years.

单项选择题

After you have made purchases, you should

A. send an email to merchants.
B. look for more product information.
C. check confirmation emails.
D. change your credit card.

Questions 29 and 30 are based on the following news. Travelers in the low-Earth orbit can do the following activities EXCEPT 您的浏览器不支持 audio 元素。

Questions 29 and 30 are based on the following news.
Travelers in the low-Earth orbit can do the following activities EXCEPT