下列哪项不是霉菌的特征： [ ]
A．单细胞丝状体
B．多细胞丝状体
C．菌丝有分枝
D．孢子长在直立菌丝顶端
答案：A
His uncle _______ in that bank ________ a clerk. [ ]
A. work, as
B. works, for
C. work for
D. works, as
碾压混凝土坝的连续浇筑方式为（）。
A.RCCB
B.RCC
C.RCD
D.RCCD
