DTY丝饼侧面灰尘、手渍等经剥丝后便可除去的丝饼可()。
A、不降等
B、降8等
C、降c等
D、降8等或降c等
参考答案:A
It is ____the ancient temple at the top of the mountain.
A.worth to visit
B.worthwhile visit
C.worthwhile visiting
D.worthy being visited
在寄生虫感染时,下列哪种免疫球蛋白升高有辅助诊断价值()
A.IgG
B.IgA
C.IgM
D.IgE
E.IgD