• 2022-06-19
    The number of students participating in online courses varies  .
    A: year to year
    B: year and year
    C: year by year
    D: year on year
  • A

    内容

    • 0

      题:(拓展)下面哪些表达式能够判断某年year不是闰年。 A: not(( year%4==0 and year%100 !=0 ) or ( year%400==0 )) B: not( year%4==0 and year%100 !=0 ) and not ( year%400==0 ) C: year%4!=0 or year%100 ==0 and ( year%400 !=0 ) D: year%4==0 and year%100 !=0 or ( year%400==0 )

    • 1

      判断year变量为闰年的表达式为()。 A: year%4==0&amp;&amp;year%100!=0&amp;&amp;year%400==0 B: year%4==0||year%100!=0&amp;&amp;year%400==0 C: year%4=0&amp;&amp;year%100<;>;0||year%400=0 D: year%4==0&amp;&amp;year%100!=0||year%400==0

    • 2

      用变量year表示某一年,判别不是闰年的逻辑表达式有( ). A: (year%4||!(year%100))&&year%400 B: 61519 C: (year%4==0&&year%100!=0)||year%400==0 D: !((year%4==0&&year%100!=0)||year%400==0) E: (year%4!=0||year%100==0)&&year%400!=0

    • 3

      【单选题】闰年能被400整除或者能被4整除但不能被100整除。以下_______不是判定year是闰年的正确表达式。 A. year%400==0 || year%4==0 && year%100!=0 B. !(year%400) || ( !(year%4) && year%100) C. !year%400 || !year%4 && year%100 D. year%400==0 || (year%4==0 && year%100!=0)

    • 4

      The year 2007 will be named as A: the Year of Russia in China. B. the Year of Trade in China. B: the Year of Trade in Russia. D. the Year of China in Russia.