His earnings are said to________￡3000 000 per year A: amount to B: mount to C: accord to D: account to

Guanghai Co. was organized on January 1, 2012 and issued 200 000 shares of common stock on that date. On July 1, an additional 100 000 shares were issued for cash. Net income for the year was 600 000 yuan. Net earnings per share amounted to A: 3.00 yuan. B: 2.50 yuan. C: 2.40 yuan. D: 2.00 yuan.

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

This year is the year of Gengzi, and next year is the year of ___________.

5，00a000a07，00a000a04，00a000a06，00a000a04，00a000a06，00a000a0（　　）。

判定year是否为闰年的表达式是 A: year % 400 == 0 or year % 4 == 0 and year % 100 <> 0 B: year % 400 == 0 or year % 4 == 0 , year % 100 != 0 C: year % 400 == 0 or year % 4 == 0 and year % 100 != 0 D: year % 400 == 0 or year % 4 == 0 , year % 100 <> 0

21（） A: next year B: that year C: this year D: by year

使用变量year代表年份，以下表示判断year是否为闰年的布尔表达式是 。 A: (year % 4 == 0) and (not(year % 100 == 0)) or (year % 400 == 0) B: (year % 4 == 0) and (not(year % 400 == 0)) or (year % 100 == 0) C: (year % 4 == 0) and (year % 100 == 0) or (year % 400 == 0) D: (year % 4 == 0) or (not(year % 100 == 0)) and (year % 400 == 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 )

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