Programs are under way to examine the ______of mining these deposits.
A. fragile
B. methods
C. probabilities
D. future
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According to the article, which of the sentence can best describe the definition of the telecommunication？
A. Telecommunications are devices and systems that transmit electronic signals across long distances.
B. Telecommunications allows people around the world to contact one another, to access information instantly, and to communicate from remote areas.
C. Telecommunications usually involves a sender of information and one or more recipients(收件人) linked by a technology.
D. Telecommunications are devices and systems that carry, electronic signals across short distances.
听力原文：At first, what were balls made of？
(9)
A. Grass or leaves.
B. Feathers or hay.
C. Rock.
D. Animal skin.
The most prominent types of colleges and universities in the United States and Canada include the following EXCEPT______.
A. community colleges, state or provincial universities
B. liberal arts colleges, professional schools, military academies, and proprietary institutions
C. technology colleges, industrial colleges, plant colleges and humanity colleges
D. technical colleges, agricultural colleges, teachers' colleges, and colleges affiliated with religions
听力原文：What is the reason for ancient people to play bail？
(10)
A. To get fun.
B. To fight.
C. To learn speed and skill.
D. To learn how to be a soldier.
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