牛三日热是由（）引起传染病。
A.病毒
B.细菌
C.真菌
D.衣原体
E.支原体
参考答案：A
-- Dear me! I _____ you at first sight! But you do have changed a lot!
-- Nor _____ I! You are no longer the Fat Girl!
A．haven’t recognized; have
B．hadn’t recognized; had
C．don’t recognize; do
D．didn’t recognize; did
GPS现代化计划完成后，GPS单点定位精度可达（）
A.毫米级
B.厘米级
C.亚米级
D.10米级
