经螨传播的立克次体病是
A．Q热B．流行性斑疹伤寒C．地方性斑疹伤寒D．斑点热E．恙虫病
参考答案：E
The teachers are said _____ to the new office, where they have better conditions.
A．to move
B．to have moved
C．moving
D．having moved
正式足球比赛开始时球的重量应不多于（）克。
A.410
B.450
C.480
D.500
