生又嘱再四，吴锐身自任而去锐身自任：
参考答案：挺身担起责任。
The old town has narrow streets and small houses ________ are built close to each other.[ ]
A. they
B. where
C. what
D. that
除盐水站中机械过滤器各阀门在开位时显示的颜色为（）。关位显示为红色。
