高致病性禽流感的特点是（）
A.发病率高，死亡率高
B.发病率高，死亡率低
C.发病率低，死亡率低
D.发病率低，死亡率高
参考答案：A
The layer thought it unfair for his client to _______ ten years in prison just because he had helped
the robbers escape. [ ]
A. to be sentenced
B. to sentenced to
C. to be sentenced to
D. have sentenced to
阀门的严密性试验压力应为公称压力的( )倍。
A．1.0B．1.1C．1.2D．1.5
to be sentenced