金银花、连翘在清营汤中的作用是（）
A.清热解毒
B.凉血消痈
C.透营转气
D.凉血消斑
E.解毒活血
参考答案：C
限载4吨的货车，能一次把7台质量均为600千克的货物运走吗？
Food safety is important. Rules _____ to stop people from food pollution. [ ]
A. must make
B. must be made
C. can make
D. can't be made
