世界上第一台尿液分析仪出现在（）
A.20世纪50年代
B.20世纪60年代
C.20世纪90年代
D.20世纪70年代
E.20世纪80年代
参考答案：D
读一读，判断句子。
1. There are donkeys. Yes□ No□
2. There are two horses. Yes□ No□
3. These are lambs. Yes□ No□
4.These are rabbits. Yes□ No□
5. These are not goats. They are sheep. Yes□ No□
慢性隐匿型细菌性痢疾的临床特点是()
A.1年内有急性菌痢史
B.无明显腹痛、腹泻
C.大便常规有大量炎性细胞
D.大便培养有痢疾杆菌
E.肠黏膜有痢疾溃疡
There are donkeys. Yes□ No□
There are two horses. Yes□ No□
These are lambs. Yes□ No□
These are rabbits. Yes□ No□
These are not goats. They are sheep. Yes□ No□