新翳
参考答案:
新翳为病初起,黑睛混浊,表面粗糙,轻浮脆嫩,基底不净,边缘模糊,具有向周围与纵深发展的趋势,荧光素染色检查阳性,并伴有不同程度的目赤、碜涩疼痛、畏光流泪等证。
根据首字母或用单词适当形式填空。
1. Liu Huan sang the s_____"You and Me". It sounds wonderful.
2. I'm a g _____ teacher. I know countries and cities well.
3. He studied for his English t _____ last night.
4. Is _____my holiday in my hometown last month.
5. We went to the m _____ last weekend.
6. I don't think everyone _____ (enjoy) their week-ends.
7. It was a nice day and I _____ (be) very happy.
8. It’s time _____ (play) sports.
9. Let's do some _____ (read).
10. My brother_____ (go) to study in America last year.
下列说法中错误的是( )
A.干冰与二氧化硅晶体熔化时,所克服的微粒间相互作用不相同
B.C2H5OH与C2H5Br相比,前者的相对分子质量远小于后者,而沸点却远高于后者,其原因是前者的分子间存在氢键
C.非金属单质只能形成分子晶体
D.短周期元素离子 aXm-和 bYn-具有相同的电子层结构,若a>b,则n>m