钩端螺旋体病眼部后发症主要于哪一型钩体感染后出现
A．波摩那型
B．黄疸出血型
C．七日热型
D．犬型
E．秋季热型
参考答案：A
腰痛伴面部红斑、低热、脱发的疾病是（）。
A.类风湿关节炎
B.强直性脊椎炎
C.风湿热
D.骨关节炎
E.系统性红斑狼疮
Three-fourths of the homework ____ today. [ ]
A. has finished
B. has been finished
C. have finished
D. have been finished
