具有脊柱“竹节样”改变的典型X线表现是（）。
A.类风湿性关节炎
B.强直性脊柱炎
C.增生性脊柱炎
D.干燥综合征
E.白塞氏病
参考答案：B
It was too noisy outside. Not until ____at the top of my voice _____his head.
A．I shouted; had he turned
B．did I shout ;did he turn
C．had I shouted; he turned
D．I shouted ;did he turn
急性中毒时可引起迟发性神经病的毒物是（）
A.一氧化碳
B.有机磷农药
C.氰化氢
D.硫化氢
