数组scores定义如下：int[] scores=new int[5]{65,71,90,68,80};则scores[1]=（）

下列选项能正确定义一个整形数组的是： A: int scores[]; B: int[] scores; C: int scores={0,0,0,0}; D: int scores=new int[10];

There are ______ students playing basketball in the room. A: score of B: scores of C: two scores D: two score of

Two ____years ago he lived in America. A: scores B: score C: score of D: scores of

设用列表来描述分数，scores = &#91;88, 52, 96, 75, 97, 100&#93;。以下选项中，哪些能够实现遍历列表里的分数，并在屏幕上打印输出（所有分数在一行打印，分数和分数之间用空格间隔）？ 即，输出结果为：88 52 96 75 97 100 A: scores = [88, 52, 96, 75, 97, 100] <br> for score in scores: print(score, end=' ') B: scores = [88, 52, 96, 75, 97, 100] <br> i = 0 while i < len(scores): print(scores[i], end = ' ') i += 1 C: scores = [88, 52, 96, 75, 97, 100] <br> for score in scores: print(score, end=', ') D: scores = [88, 52, 96, 75, 97, 100] <br> i = 0 while i < len(scores): print(scores[i], end = ', ') i += 1

In the last paragraph, the author seems to______. A: think SAT scores creditable in every aspect B: assert the authenticity of SAT scores C: show us the reasons why colleges use the SAT D: advocate the reliability of SAT scores

以下关于 Python自带数据结构的运算结果中正确的是( )。 A: scores ={' Jack ': 90,' Mike ': 80, ' Jay': 85,'Bill ': 60};del scores['Bill'];len(scores)的结果是6。 B: scores ={' Jack ': 90,' Mike ': 80, ' Jay': 85,'Bill ': 60};s=dict(Jack=90,Mike=80,Jay=85,Bill=60);则scores==s判断结果是 False。 C: scores ={' Jack ': 90,' Mike ': 80, ' Jay': 85,'Bill ': 60},无法执行命令scores['Bill']=90,因为原来的字典中已经有一个值为90了。 D: scores ={' Jack ': 90,' Mike ': 80, ' Jay': 85,'Bill ': 60};sorted(scores.keys())的运算结果是['Bill','Jack','Jay','Mike']。

A t-test is a ratio of ___________ to ___________.（ ） A: expected values; observed values B: between-group differences; within-group differences C: success; failure D: highest scores; lowest scores

Match the items in Column A with the items in Column B.

The smaller the spread of scores around the arithmetic mean,