What was found in the survey?
A. Men care more about winning than women.
B. Desire for winning produces a lot of pressure.
C. Most young people do not play sports on a regular basis.
D. Winning in sports is not important to most teenagers.
查看答案
What do parents and coaches care most about?
A. The children can enjoy the sports.
B. The children are in better physical condition.
C. The children can benefit in character.
D. The children can win in the sports.
What would Coach Vince Lombardi agree with?
A. Failure teaches us more than success.
B. Sports should be played only for fun.
C. All athletes should be encouraged to try their best.
D. Children should not take part in competitive games.
模拟信号是（ ）信号。
A. 时间和数值上连续
B. 时间连续，数据不连续
C. 时间不连续，数值连续
D. 时间和数值上均不连续
数字信号是（）信号
A. 时间和数值上均具有离散性
B. 时间上有离散性，数值上有连续性
C. 时间有连续性，数值有离散性
D. 时间连续、数值连续
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