【单选题】以下哪项不属于睡眠卫生教育内容?()
C.
每天同一时间起床,周末也不例外,用闹钟达到目的
【单选题】The appeal of advertising to buying motives can have both negative and positive effects. Consumers may be convinced to buy a product of poor quality or high price because of an advertisement. For exam...
A.
stressing their high quality
B.
convincing him of their low price
C.
maintaining a balance between quality and price
D.
appealing to his buying motives
【单选题】以下哪项不属于健康教育的内容的是( )。
【判断题】对于任意正整数n,(n-1)!+1可以被n整除。()
【简答题】(1)是否存在m,n,使得m(m+2)=n(n+1)? (2)设k(k≥3)是给定的,是否存在m,n,使得m(m+k)=n(n+1)?
【单选题】五个连续奇数,中间一个是2n+1 (n为正整数),那么这五个数的和是( )
【简答题】n是,则1+(-1) n =______.
【判断题】债券的价格与债券面值、票面利率成正比,而与市场利率成反比。( )