题目内容
（请给出正确答案）
[主观题]
For ten years the problem about the water has not been solved, we came to think that it ha
s been a ______ problem in this area.
A．perpetual
B．persuasive
C．picturesque
D．possessive
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人兽共患的螺旋体病为
A.梅毒
B.钩体病
C.雅司病
D.回归热
E.奋森牙龈炎
