问题
多项选择题
属于视网膜中间神经元的是（）。
A、水平细胞
B、网间细胞
C、米勒细胞
D、双极细胞
答案
参考答案：A, B, D
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属于视网膜中间神经元的是（）。
A、水平细胞
B、网间细胞
C、米勒细胞
D、双极细胞
参考答案：A, B, D
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| We've come a long way from blackboards and chalk. Modern technology (技术) has provided us with lots of ways we can make learning more interesting. Perhaps most importantly of all, it's also more interactive (互动). Some kinds of tools (工具) have been developed. They make the 21st century learning experience much more interactive and interesting. Attracting the attention of students is always difficult, but these tools have made a big difference in how pupils learn. For example, an interactive whiteboard is different from a traditional chalkboard. It allows the teachers to show images and provide sound as well. If you imagine a large computer screen with colorful images and sound added in, you can see why so many pupils are drawn in by what they see and hear in a modern classroom. Various audio (声音的) tools also help to make sure that everyone can hear what the teacher has to say. In the past, if a teacher said something that a child missed, perhaps the child was too timid (胆小的) or nervous to ask them to repeat it. Now they are less likely to miss out simply because they're sitting too far away from the teacher to hear them. The 21st century classroom is able to teach pupils more than one thing. For example, imagine a history lesson is given in a modern classroom. How is it different from a classroom setting in the past? The answer is simple. The students will not only learn about history itself, they will also learn how to use the modern equipment (设备) that helps the teacher get their message across. Modern technology can make teaching and learning easier. Student response (应答) system makes everyone able to express their opinions or answers without having to speak up. Since everyone can do it, the teacher can see who needs more help in other ways. It's clear that this kind of classroom technology is making a great difference in modern classrooms. | ||||||
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You feel tired and you have no energy. You can’t breathe out of your nose and your throat hurts. Don’t be afraid you have probably just got a . Every year, many kids experience this sick feeling. Some kids have up to eight colds every year. So, what is a cold? Well, a cold is an infection (传染病). It affects (影响) nose, ears and throat and makes you feel sick and weak. It’s very to catch a cold. When someone sneezes or coughs near you, bacteria（细菌） travel through the air and your body and then make you sick. Also, if you touch your nose or eyes after touching something that has bacteria on it, a door or your desk at school, you can get a sick. Some of the symptoms（症状）of a cold a fever, a sore throat and a cough. If you sneeze, or if your nose is runny and your are watery, you’ve probably got a cold. Most people who have got a cold feel very tired and don’t have much to do anything. A cold is not a pleasant thing to .However, there are some things you can do to feel .You should have hot drinks you’ve got a sore throat and cough. You should eat healthy foods and get a lot of rest so your body can be strong enough to your sold. If you’ve got a fever, or if you aren’t feeling better within a few days, you should visit your and take some medicine. A cold can be frustrating just remember that there are many things you can do to feel better and get stronger. Take care of your body and stay healthy.
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