禁止在高速公路用地范围内取土、（）、（）、（）。
参考答案：堆放杂物；倾倒垃圾；开沟引水
With so many evidence against him he had to____ his errors openly.
A．refuse
B．acknowlege
C．declare
D．recognize
溶液中溶质的质量分数是用溶质质量占溶液质量的百分比来表示的。
