是这个话中的 What is the girl doing? She is having her eyesight examined to detect short-sightedness. 答案 目光短浅 哦..那就是近视的意思. 相关推荐 1 short-sightedness什么意思? 是这个话中的 What is the girl doing? She is having her eyesight examined to detect short-sightedness. ...
Farsightedness, also referred to as “hyperopia” by eye doctors, is the common term describing eyesight that is blurry on objects that are nearby, but clear when you look at anything in the distance. So, watching TV may be a problem, but reading a highway billboard probably isn’t. ...
What type of lens is used to correct nearsightedness? A. Convex lens B. Concave lens C. Plane mirror D. Prism 相关知识点: 试题来源: 解析 B。解析:近视是由于眼睛的晶状体对光线的会聚能力太强,需要用凹透镜来矫正。选项 A 凸透镜用于矫正远视眼;选项 C 平面镜主要用于反射;选项 D 棱镜用于光...
Long the subject of debate on the "genes versus environment" theme, an animal model shows that at least some myopia may be acquired. G Kolata 被引量: 0发表: 1985年 What causes myopia? Myopia (nearsightedness) is a highly common eye condition that is predominantly caused by an axial ...
C.3DprintinglaunchedbyLongMarch5B D.3Dprinting—anewwaytoexplorespace 二、七选五 阅读下面短文,从短文后的选项中选出可以填入空白处的最佳选项。选项中有两项为多余 选项。 语篇类型:说明文 主题语境:人与自我 词数:285 难度:★★★ Examanxiety (2022·山东省德州市第一中学高二阶段练习)Hasthiseverhappenedto...
What is the main idea of the passage? A. Children's short-sightedness can be cured. B. There are several causes of childre n's short-sightedness. C. Spending more time outdoors can lead to better eyesight. D. Children who spend more time outdoors are much healthier. ...
Kolata, Gina
Shortsightedness is a visual condition in which distant objects appear blurry to a person. Most people who are short sighted can...
a4、It can be argued that memory and foresightedness are the essence of intelligence; that man’s ability to manipulate time, to employ both past and future as guides to presentation, is what makes him human. 4、它可以被争论记忆和深谋远虑是智力精华; 人的能力操作时刻,过去使用两和未来作为对...
Hyperopia, or farsightedness, is a common vision problem, affecting about a fourth of the population. People with hyperopia can see distant objects very well, but have difficulty focusing on objects that are up close. The condition is sometimes referred to as "hypermetropia" rather than hyper...