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【简答题】
(1)周末,和家人去湿地公园游玩,看见平静的水里,鱼儿在白云中游来游去.看到的鱼儿是由于光的 ______ 射形成的像;若湖水深 2 m ,则白云形成的像到水面的距离 ______ ( 选填“大于”、“小于”或“等于”) (2)常见的视力缺陷类型有近视眼和远视眼,如图所示是一位视力缺陷者的眼球成像示意图,他的视力缺陷类型是 ______ ,要矫正他的视力缺陷应配带 ______ ( 选填“凸透镜”或“凹透镜”)
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参考答案:
举一反三
【判断题】已创建的表间关系不能修改和删除。
A.
正确
B.
错误
【简答题】自然、社会、精神是我们的生活世界的三个基本领域,而()、()、(),则是我们人类知识体系的三个基本领域。
【简答题】When a hurricane arrives, fishermen are in great er if they are at sea and do not get______.
【单选题】the request in your letter of March 15th, we have covered the goods for you.
A.
As
B.
Comply with
C.
At
D.
Meet
【单选题】《三好建筑工程虚实结合教学实训平台》中,板支模施工楼层高度超过()m及其以上建筑物模板安装,外脚手架应随同搭设。
A.
2
B.
3
C.
4
D.
5
【单选题】---I seem to be lost. Could you tell me _____? ---Sure. You can take the No.3 bus to get there.
A.
where is the nearest hospital
B.
how long it will take me to the airport
C.
how far is my trip to the Olympic Village
D.
how I can get to the National Museum
【单选题】The Deep Sea Drilling Project was of great significance because it was______.
A.
the first attempt to use a special technique.
B.
the first extensive exploration of the ocean bottom.
C.
attracting many geologists from all over the world.
D.
of great importance to funds of the gas and oil industry.
【单选题】人身保险合同的保险标的为()。
A.
物质财产及有关利益
B.
财产
C.
人的生命和身体
D.
人的生命
【简答题】选用适当的词或短语填空。 too much, strange, anxious, mean, picnic 1. What should we take for the ? 2. The granny could not find the way to the hospital. She felt . 3. There is snow outside, so we can't go out for...
【单选题】The Compass The great sea voyages of Europe's 'Age of Discovery,' such as Christopher Columbus's trip to the West Indies in 1492, would have been impossible without the use of a compass. This great de...
B.
C.
Jade (玉石) finders played an important role in the invention of the 'ladle'. They travelled great distances to look for jade. in order not to lose directions, they would take a 'ladle' with them. The jade connection is important. Lodestone is a hard material—though not as hard as some jade. And the making of a magnetic 'ladle', as well as a highly smooth stone board, would have required great skill. This suggests that the compass was invented by the jade finders of ancient China. However, the making of a 'ladle' was a tough job. Much work needed to shape a piece of lodestone into a ladle would mean much of its natural magnetism (磁性) had been lost. This again meant that only a few 'ladles' could have been produced. Small numbers of ladies produced and growing need for navigation led to a search for ways to produce more compasses, and at the same time, smaller and better compasses. What is the first paragraph mainly about? A.Columbus was a great sailor and discoverer. B.The compass was invented by Columbus. C.The invention of the compass is important in human history. D.Columbus introduced the compass to the West Indies.
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