The sentence "Our planet has shrunk" underlined in Paragraph 1 means that______.
A. the earth has become physically smaller
B. the more advanced ways of traveling has made the distance between countries shorter
C. the traditional concept of our planet has become out-of-date
D. modern means of communication has made it much easier for people to communicate with each other from different parts of the world
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听力原文：男：你真的要去陕北农村支教吗？那里可很艰苦呀!
女：嗯，我决心已定。爹妈不在了，我不想在家受嫂子的白眼儿。
问：女的为什么要去陕北？
(27)
A. 一时冲动
B. 热爱教育
C. 回家探亲
D. 维护自尊
Life insurance, before available only to young, healthy persons, can now be obtained from
A. before young, healthy persons available only,
B. available only to young, healthy persons before,
C. available only to persons young, but more healthy,
D. before young and healthy persons only available to,
The young man was advised to Go West to______.
A. find and accumulate more wealth
B. get more free land for the family
C. be the pioneers of the West
D. expand the country's territory
The word "edge" underlined in Paragraph 5 means______.
A. something very sharp
B. the outside limit or boundary
C. the degree of anger, nervousness or annoyance
D. a slight advantage over somebody
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