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【简答题】
阅读理解。 Want to save the environment? You probably can't fix everything on your own, but by taking small steps and keeping the environment in mind every day, you can make a difference, 1. Think Green. Challenge yourself to think about the environment as you live your life. If you shut off lights when you leave the room, turn off your TV when you're not watching it, you'll save energy. If you take shorter showers, you'll save water. 2. Shop Green. Shopping is fun, but buying things you don't need is wasteful and bad for the earth. Before you buy something, ask yourself how much you'll really use it. Keep yourself away from buying products with unnecessary packaging (包装), and whenever possible, buy things that were locally made instead of those shipped from far away. 3. Dress Green. Wear green trousers and T-shirts if you want. But what really matters isn't the colour, it's how the clothes were made. If you want to help the environment, the best place to find clothes is at a vintage store , but you might not want to buy everything used. No matter where you shop, keep an eye out for products made from environmentally friendly materials like organic (有机的) cotton, which is grown without the use of pesticides (杀虫剂). 4. Study Green. What's better than learning about the environment? Save it while you learn, It can be as simple as using both sides of a piece of paper before you recycle it, or reusing an old textbook:instead of buying a new one. If you want to do more, join an environmental group at your school, and encourage your friends to join, too. 1. The underlined phrase 'a vintage store' in this passage refers to (是指) a place where you can buy _____. A. cheap clothes B. fashionable clothes C. second-hand clothes D. clothes of special size 2. Which of the following acts does not agree with the writer's green ideas? A. Taking shorter showers. B. Buying products with unnecessary packaging. C. Wearing clothes made from organic materials. D. Using both sides of a piece of paw. 3. What does the passage mainly talk about? A. Some Methods to Live Happily. B. Some Advice to Save Money in Daily Life. C. Some Steps to Live a Healthy Life. D. Some Ways to Make One's Life Green.
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举一反三
【单选题】杨氏双缝干涉条纹的特点有:
A.
中央条纹为明纹;
B.
条纹等间距均匀分布;
C.
中央条纹两侧条纹明暗相间,但是分布不对称;
D.
条纹间距不相等;
E.
用白光光源进行双缝实验时,中央明纹为白色,其它各级为彩色,内紫外红。
【多选题】如图所示,在杨氏双缝干涉实验中SS 1 =SS 2 ,两缝S 1 和S 2 间的距离为d,双缝到屏的距离为D (D >>d),所用单色光在真空中的波长为 ,通过空气后在屏幕E上形成干涉条纹。两缝S 1 和S 2 是同一光源 S 形成的同一个波面上的两个点,它们发出的光波列的特点有:
A.
光矢量方向垂直
B.
光频率相同
C.
两缝S 1 和S 2 发出的两光波列相遇在对称点O点时的波程差为0
D.
两缝S 1 和S 2 发出的两光波列相遇在P点时的波程差为
【单选题】对重复的数据、表格、卡片应进行:
A.
补填
B.
输入
C.
处理
D.
编号
【判断题】为企业生产或经营活动提供原材料、零部件或经营商品时,物品在提供者与需求者之间实体流动称为供应物流。
A.
正确
B.
错误
【单选题】杨氏双缝干涉的条纹特点为( )。
A.
明暗相间,条纹宽度各不相等
B.
明暗相间,对称分布,并且所有条纹等间距
C.
明暗相间、内疏外密
D.
明暗相间,中心条纹很亮,对称分布,两侧明条纹亮度减弱
【简答题】下面是高中物理“光的干涉”一课的教学片段.李老师在引入了光的干涉现象后.用幻灯片演示杨氏双缝干涉实验的示意图。 李老师:大家看这个示意图,第一个屏上只有一个缝,而第二个屏上有两个缝,那么平行光经过两个屏后能在观察屏上看到什么? 学生:条纹。 李老师:这些条纹有什么特点? 学生甲:明暗相间。 学生乙:宽度几乎一样。 李老师:对,双缝干涉产生的干涉图样特点是明暗相间、粗细均匀、间隔相等的条纹。 学生丙...
【单选题】以下不属于我国新能源扶持政策的是( )。
A.
对可再生能源发电实行全额保障性收购制度
B.
太阳能光电建筑应用财政补助、金太阳示范工程
C.
863计划
D.
推广应用新能源汽车,对示范城市拟定推广配额标准
【简答题】谈谈你对《诗经》中赋、 比 、兴艺术表现手法的理解。
【简答题】如果组织机构下面存在账套,这个组织机构能删除吗?
【单选题】()是指为企业提供原材料、零部件或其他物品时所发生的物流活动。供应物流是保证企业生产经营活动正常进行的前提条件。
A.
供应物流
B.
生产物流
C.
销售物流
D.
回收物流
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