【单选题】_____ hard she tried, nothing seemed to work.
【单选题】______ hard she tried, she did not pass the exam.
【单选题】hard she tried, nothing seemed to work.
【单选题】下列不是基于图形操作界面的操作系统是( )。
【单选题】She couldn't remember what she had dreamed of, __________ hard she tried.
【单选题】_____hard she tried, she could not control her feelings when she was told her baby had been found.
【简答题】编写函数计算一个数a的平方根(按下面迭代公式实现),要求精确到小数点后10位。主函数中输入正数x,调用上面定义的函数计算x的平方根,并输出。 x(n+1) = (x(n) + a/x(n)) / 2
【单选题】若有整型变量a,要描述如下不等式关系15<=a<30,正确的表达式为
【单选题】在中外服装史上,服饰禁令之所以不能持久,制服总是被人们敬而远之,都是______的结果。