发酵技术与我们的生活息息相关．下列食品中都是利用乳酸菌发酵的是（ ）
A．泡菜、酸奶
B．面包、米酒
C．泡菜、米酒
D．腐乳、酸奶
答案：A
As more and more cars are produced and used, so the _____ from their exhaust-pipes contains an even larger volume of poisonous gas.
A．exposure
B．distribution
C．expansion
D．emission
