动车组应急救援规定中，应优先选择（）担当救援车。
A.内燃机车
B.电力机车
C.过渡车
D.动车组
参考答案：D
The flood is believed ____ more than 50 people and made thousands homeless, ____ it perhaps the most destroying flood in history in the area.
A．killing; to make
B．to have killed; making
C．to have killed; having made
D．having killed; making
The rain is very _______. [ ]
A. small
B. big
C. heavy
D. heavily
