检查颈椎的特殊试验不包括（）。
A.Jackson压头试验
B.摇摆试验
C.前屈旋颈试验
D.旋颈试验
E.颈静脉加压试验
参考答案：B
Armstrong became interested in _______ ever since he took his first _______ at the age of six.
A．fly; flying
B．flight; fly
C．flight; flying
D．flying; flight
Day and night __________. [ ]
B. alternate
C. exchange
D. alternative
