我国莱姆病的主要传播媒介有（）
A.过敏性硬蜱
B.太平洋硬蜱
C.噬血群蜱
D.路子硬蜱
E.全沟硬蜱
参考答案：C, E
(2)你认为应当采取什么样的措施来解决失业问题。
after a long walk,Tom called and said he couldn't come to the party.[ ]
A. Having worn out
B. Being worn out
C. To be worn out
D. Worn out
