【单选题】“大米、面粉涨价了,也得买”、“金价涨了,以后再买金项链吧”。这些经济现象我们都感受过,这里包含的经济学道理是() ①价格变动会引起需求量的变化 ②价格变动对生活必需品需求量影响小 ③价格变动对高档耐用品的需求影响较大 ④价格变动由供求关系决定
【单选题】下列关于标准函数的说法中,正确的是( )。
B.
Int函数和Fix函数参数相同则返回值就相同
C.
Str函数用来把纯数字型的字符串转换为数值型
【单选题】Text 1 has not a title, now please choose the right one for it !
A.
Stealing in Southeast Asia
B.
Marketing Western Products in Southeast Asia
C.
Copyright Abuse in Southeast Asia
D.
The Heavy Cost of Investing in Southeast Asia
【简答题】下面程序可求出矩阵a的两条对角线上的元素之和。请填空。 int a[3][3]={1,3,6,7,9,11,14,15,17}; for(i=0;i<3;i++) for(j=0;j<3;j++) if( ___(1)___ ) sum1+=a[i][j]; for(i=0;i<3;i++) for(j=0;j<3;j++) if( ___(2)___ ) sum2+=a[i][j]; print...
【单选题】“大米涨价了,也得买”、“金价涨了,以后再买金项链吧”。此类经济现象表明().
【单选题】Please choose the sentence with the correct use of punctuation.
A.
I saw a lovely cat in the garden, and it was playing a paper ball in the sun.
B.
I saw a lovely cat in the garden and it was playing a paper ball in the sun.
【单选题】Please choose the best anwser from the four choices.
A.
It has too few movie channels for his bill.
B.
It charges extra money for extra service.
C.
It shows a lot of movies per month.
D.
It offers good and stable service.
【单选题】昆虫的翅可分为多种类型,其中 蝽的前翅为( ) 。