【单选题】已知int a,b;下列switch语句中正确的是()
A.
switch(a){ case a:a++;break; case b:b++;break;}
B.
switch(a+b){ case 1:a++;break; case 2:b++;break;}
C.
switch(a*b){ case a*b:a++;break; case a/b:b++;break;}
D.
switch(a/10+b){ case a+b:a++;break; case a-b:b++;break;}
【单选题】There _____ great changes in our hometown in the past fifteen years. [ ]
【单选题】Language has been changing, but such changes are not so obvious at all linguistic aspects except that of______.
【单选题】There ________ great changes in Zhangzhou since 2010.
【判断题】保护环境就是保护生产力,改善环境就是发展生产力
【单选题】Good use___ the natural resources to improve people’s life in this area.
【单选题】In the past few years, there _____ great changes in my hometown. [ ]