— How many students are there in your cl

肾血管疾病不包括

A．肾动脉硬化

B．肾静脉栓塞

C．肾静脉硬化

D．肾动脉狭窄

E．肾梗死

(74) is a network layer device that supports multiple LAN interfaces and segments LANs into smaller collision and broadcast domains.

A．Repeater

B．Router

C．Bridge

D．Switch

Speaker A. Did you hear about those people who got hurt when going mountain climbing I think they shouldn't allow people to go mountain climbing. It's too dangerous.Speaker B: ______

A．I couldn't agree more. I can't understand why anyone wants to get to the top of a mountain.

B．I couldn't agree less. Mountain climbing is actually more dangerous than surfing.

C．I'm sorry to hear that. Where did you get the news

D．No, I have decided not to go mountain climbing with my friends next month.

以下有关姜片虫的说法正确的是（）

A.姜片虫病主要流行于东南亚各国

B.人是姜片虫病的终末宿主

C.大量姜片虫感染者可并发肠梗阻

D.姜片虫外形扁平似葵花子仁

E.以5~20岁的儿童和青少年发病率高