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Many of us don’t pay attention to the importance of eye care. It’s said that if you take care of your body, then you can be healthy. That is why our eyes should be given a lot of care. Natural eye care should be put in a number one place. There are several causes leading to poor eyesight like not enough food, gene(基因) and aging(年龄增长). Televisions, computers and reading are also the causes of having poor eyesight. If you happen to work in front of the computer, it is best to take a rest every once in a while. Something dirty can cause redness and they will make you feel uncomfortable. It is bad for your eyes, too. If this happens, the best way is to clean your eyes by using cold water. You must also try your best to protect your eyes from harmful thing. For example, sunglasses are not just fashion but they can also serve as a great way to protect your eyesight from UV rays . Eating healthy foods will do good to your eyesight. Remember that vitamins(维生素) A、C and E are good for eyes. Try to eat food groups that have these vitamins. And you should do eye exercises because exercise protects your eyesight, too. If a person exercises regularly(规律地) and eats the right kind of food, his eyes will stay in good condition for a long time. All above are natural ways of eye care that help us keep healthy eyes. Being happy all the time can be helpful to a person’s eyesight, too. In a word, eye care is very important, no matter how old a person is. 小题1: __________ is the most important way to protect our eyes. A.Natural eye care B.Taking medicine C.Seeing the doctor D.Being happy all the time 小题2:All the following causes can lead to bad eyesight except _________. A.age B.height C.reading D.computer 小题3: What should you do if you have to work in front of the computer? A.Eat healthy foods. B.Clean the eyes by using cold water. C.Wear a pair of sunglasses. D.Have a rest after working for a while. 小题4: What do the under words “UV rays” mean? A.沙土 B.闪电 C.紫外线 D.超声波 小题5:Which is the best title of the passage? A.Ways of Eye Care B.Ways of Eye Exercises C.Way of Being be Happy D.Way of Being Healthy
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举一反三
【判断题】人和自私是一种真包含关系。()
A.
正确
B.
错误
【简答题】已知三台主机进行相互通信时:(1)计算机A 、B、 C的IP地址:46.221.96.1 、46.221.96.2 、195.0.0.1(2)判断并回答: 1)这些计算机分别属于什么类网络?2)这些计算机是否属于同一个子网?这些计算机若不属于同一个子网,指出哪些是属于同一网络的,其网络地址是什么?哪些计算机属于另一子网,其网络地址又是什么?3)这三台主机的主机编号依次是什么?
【单选题】键盘的发展,经历了传统有线键盘、无线USB键盘、蓝牙键盘、多接口键盘的历程,这体现了哪种思维方式
A.
进化思维
B.
联想思维
C.
灵感思维
D.
直觉思维
【单选题】反映产业结构是否合理的综合指标是 。
A.
产业结构的分配额
B.
产业结构的内部协调性
C.
产业结构的效益
D.
产业结构的资源配置
【单选题】以下摘录的是美国总统威尔逊在巴黎和会上提出的“十四点原则”部分内容,这在本质上反映了美国 1 公开的和平条约,必须公开缔结...... 2 领海以外......必须保持公海航行的绝对自由...... 3 ......尽可能地消除一切经济壁垒,建立平等的贸易条件 4 为了大小国家都能相互保证政治独立和领土完整,必须成立一个具有特定盟约的普遍性的国际联盟
A.
取消英、法等大国战前分赃密约,要求公开平等
B.
争夺世界市场,重新分割殖民地,夺取世界霸权
C.
打破英国海上垄断,同英国共同控制海洋霸权
D.
打破老牌资本主义国家传统势力范围和关税壁垒
【单选题】市场底量与市场潜量之间的距离表示需求的营销()
A.
效率
B.
配置
C.
灵敏度
D.
影响力
【多选题】列花卉是阳性花卉的是( )
A.
一串红
B.
鸡冠花
C.
三色堇
D.
绿萝
【简答题】论述雅尔塔体系的内容与性质和终结。
【判断题】稳定的厌氧发酵体系其pH值必然是固定一变的。
A.
正确
B.
错误
【简答题】读图,回答下列问题. (1)南、北美洲的分界线是______.美国本土位于五带中的______. (2)图示西部山脉为______,密西西比河自北向南注入______.请你说出河流与地形的相互关系.______. (3)联合国总部所在地是______. (4)美国的两个海外州中,纬度位置较低的州是______,有极昼极夜现象的州是______.
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