【单选题】表达式 print('l love python',sep=',',end='.')的输出结果为:
【判断题】当光的频率 时,无论光强多强都不会产生光电效应 。
【单选题】Teachers should be _____ with their students but should not be _____ on them.A.hard; strictB.str
A.
50. Teachers should be _____ with their students but should not be _____ on them. A.hard; strict
【判断题】医疗改革方案是现任美国总统奥巴马提出的政纲三大议题之一。( )
【单选题】在中国古代传说时期教古人构木为巢的先祖是:
【单选题】Some teachers believe that students who score high in______ needs tend to make higher grades in college than those who score low.
【判断题】当光的频率【图片】时,无论光强多强都不会产生光电效应。