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【单选题】
Choices must be made in the use of resources ( ).A.
because they are in finite supply
B.
because they are in finite demand
C.
only if the resources are nonrenewable
D.
because they are in infinite supply
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【单选题】听力原文： During the 19th century, it was common to hear people in Europe and America say that the resources of. the sea were unlimited. For example, a noted biologist writing in the mid 19th century comm...
A.
Declined.
B.
Depleted.
C.
Limited.
D.
Unlimited.
【简答题】BCD码用 位二进制数码来表示 1位十进制数码。
【单选题】---How about opening ceremony of the 18th National Congress(十八大)? ---I should say it was success.
A.
a; a
B.
the; a
C.
a; /
D.
the; /
【简答题】During the 19th century, it was common to hear people in Europe and America say that the resources of the sea were unlimited. For example, a noted biologist writing in the mid-19th century commented t...
【简答题】BCD码是用( )位二进制数码来表示1位十进制数。
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