In the first sentence, "Telecommunications allows people around the world to contact one another, to access information instantly, and to communicate from remote areas.", "... access.... instantly..." probably can be replaced by ______.
A. get…immediately
B. enter...at once
C. transmit... at once
D. send... immediately
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His presidency had an importance beyond its political achievements because______.
A. young people liked him
B. he is a strong man
C. he expressed the attitude of the people in that age
D. he attached more importance to American culture and historical traditions and intellectuals
Programs are under way to examine the ______of mining these deposits.
A. fragile
B. methods
C. probabilities
D. future
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.
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