慢性细菌性结膜炎发病原因包括()。
A.急性结膜炎治疗不当
B.毒力不强的细菌感染
C.不良环境刺激
D.慢性泪囊炎
E.慢性鼻炎
参考答案:A, B, C, D, E
内禀增长率和净生殖率的意义是______的。
—Credit cards are useful when traveling.
—True. They save us the trouble of taking too much cash.
A.particularly
B.partly
C.exactly
D.gradually