12a3-2a,
=12a(a2-4),
=12a(a+2)(a-2).
下列不属于梅毒血清学试验的是()
A.性病研究实验室试验
B.快速血浆反应素环状卡片试验
C.荧光螺旋体抗体吸收试验
D.梅毒螺旋体血细胞凝集试验
E.酶联免疫吸附试验
—There _______ a football match this evening.
—Exciting news.
A. are going to be B. is going to be C. is going to have