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【判断题】
判断题(一题2分,共10分) 1 、色觉的三要素是光、呈现颜色的物体、正常的视察觉器官。() 2 、色彩是一种感觉,它是光作用于人的视觉器官并在大脑中引起的反映。() 3 、世界万物五颜六色,追根溯源是由于光的存在。() 4 、一种黄色光其波长为580mm,该色光是复色光。() 5 、白色物体是个例外,它不受光源色的影响,因为所有色光照射到白色物体上,被它不加选择地统统吸收。( 答案:1(对) 2(对) 3(对) 4(错) 5(错)A.
正确
B.
错误
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皮皮学刷刷变学霸
举一反三
【单选题】It’s widely accepted that young babies like to do things because certain acts lead to ________.
A.
rewards
B.
prizes
C.
awards
D.
results
【单选题】By saying that the 'blast wave' from the explosion acts like 'an invisible wall of energy', the author intends to say that ______.
A.
blast can cause shrapnel or other bits of metal to slice through flesh like a knife
B.
its energy can cause a swath of disfiguring burns
C.
this energy wall can prevent victims from physical injury and obvious bleeding
D.
its tremendous energy can inflict massive internal injuries
【简答题】(C) It looks like a mobile phone（手机）, but the service is much cheaper. It acts like a mobile phone, but only in your own city. Beyond the city walls, it’s useless. “Little Smart”, also called “xiaolin...
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