83. A light signal consisting of three flashes means______
83. A light signal consisting of three flashes means______
Scan the text and find: Since when have paparazzi flashes become a synonym of “unwelcome exposure”?
Scan the text and find: Since when have paparazzi flashes become a synonym of “unwelcome exposure”?
19. Proper lightening is necessary for good eyesight, ________ human night vision can be temporarily damaged by extreme flashes of light.
19. Proper lightening is necessary for good eyesight, ________ human night vision can be temporarily damaged by extreme flashes of light.
Mechanical devices are occasionally used in marketing research. For example, ________ flashes an ad to a subject with an exposure interval that may range from one hundredth of a second to several seconds. After each exposure, the respondent describes everything he or she recalls.
Mechanical devices are occasionally used in marketing research. For example, ________ flashes an ad to a subject with an exposure interval that may range from one hundredth of a second to several seconds. After each exposure, the respondent describes everything he or she recalls.
29. According to the professor, why were the<br/>jellyfish that the student saw glowing? A: They were communicating with each other. B: They were trying to confuse predators with<br/>bright flashes of light. C: They were avoiding predators by blending in<br/>with their surrounding. D: They were trying to light up the dark water<br/>so they could see prey.
29. According to the professor, why were the<br/>jellyfish that the student saw glowing? A: They were communicating with each other. B: They were trying to confuse predators with<br/>bright flashes of light. C: They were avoiding predators by blending in<br/>with their surrounding. D: They were trying to light up the dark water<br/>so they could see prey.