工程监理单位的资质类别有（）
A、综合资质
B、特级资质
C、一般资质
D、事务所资质
E、专业资质
参考答案：A, D, E
方程x2+2xy+3y2=34的整数解（x，y）的组数为（ ）
A.3
B.4
C.5
D.6
The girl had to her journey because of her mother's illness. [ ]
A. abandon
B. leave
C. desert
D. quit
