题目

—What happened outside just now?—A car hit a man. ______, the man wasn’t badly hurt.A. Luckily         B. Hardly            C. Unluckily      D. Especially 答案：A下列生物中属于自养生物的是 [    ] A．硝化细菌 B．乳酸菌 C．青霉菌 D．酵母菌