关于甲地（15°W，23°N）的判断，正确的是[ ]
A．位于两半球
B．位于南半球
C．位于北温带
D．有阳光直射现象
答案：D
直线（a+1）x+2ay-a+1=0与圆x2+y2-2x-8=0的位置关系是[ ]
A、相离
B、相交
C、相切
D、与a的取值有关
____, it was hard for him to top the list of all the performers. [ ]
A. Would try as he
B. Try as he would
C. As he would try
D. Would as he try
