间接帮助是指帮助者不直接助力于练习者身上。
参考答案：对
Our teacher saw us ______ on the desks and went out of the classroom. [ ]
A. to sit
B. sat
C. siting
D. sitting
副溶血性弧菌在下列哪种培养基中不生长（）
A.SS琼脂平板
B.血液琼脂平板
C.3.5%NaCl琼脂平板
D.3.5%NaCl蛋白胨水
E.无盐肉汤
