左心衰竭的主要临床表现为( )
A．肺循环淤血B．体循环淤血C．颈静脉征D．肝脏扩大E．下肢水肿
参考答案：A
―Zongzi ______ to students for free in our dining hall on Dragon Boat Festival.
—Really? That sounds cool![ ]
A. offer
B. have offered
C. are offered
D. will be offered
下列各民族与风俗习惯搭配正确的是[ ]
A．蒙古族－手鼓舞
B．傣族－跳板
C．蒙古族－摔跤
D．朝鲜族－孔雀舞
