是经济学的基本原理和数学分析工具相结合,在企业经营决策中的实际应用。
A. 计量经济学
B. 信息经济学
C. 管理经济学
D. 贸易经济学
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In all English towns there is a speed______of 30 miles an hour.
A. control
B. limit
C. condition
D. allowance
A.5B.4C.3D.2E.1
A. 5
B. 4
C. 3
D. 2
E. 1
If fire is not stopped in time, it will______the forest.
A. injure
B. harm
C. hurt
D. destroy
There are______contests, where each athlete competes alone.
A. individual
B. private
C. single
D. personal