脊髓灰质炎的主要传染源是()及()病人;传播途径为()及()。
参考答案:隐性感染;轻症瘫痪型;飞沫;粪便
如果没有及时地治疗,以下可能的并发症中哪一项不正确
A.肺炎
B.脓胸
C.支气管胸膜瘘
D.支气管胆道瘘
E.消化道出血
根据句意,用括号中所给词的正确形式填空,每空填一词。
1. The young man was charged with (break) into several computers.
2. The radio says there will be much (snow) next week.
3. Yang’s great (achieve) in science go beyond what we have thought.
4. Scientists can’t explain (appear) of dinosaurs correctly. They are trying their best to find the reason.
5. Are people who work till 10 o’clock in the evening more (energy) than those who stop at 5 o’clock in the afternoon?