12. What is it that stops users getting a good night’s sleep?
A. Screens
B. blueish light C. Melatonin D. Orange or red light
13. Based on their findings, researchers have made the following suggestions except that ________.
A. Devices like iPads should be turned off at night.
B. Tablet makers should make improvements in devices.
C. Users should view iPads at full brightness instead of wearing orange glass goggles.
D. The time spent on screen before bed should be controlled.
14. We can infer from the passage that _________.
A. Orange and red light does no good to a good night’s sleep.
B. Our brains recognize orange or red light in tone as a cue that the day is ending.
C. The less melatonin our body produces, the easier we fall asleep.
D. Too much late night screen time leads to more than sleep problem.
15. The writer’s purpose for writing this article is to ________.
A. inform readers of a recent research.
B. complain about problems caused by using iPads before bed.
C. offer some suggestions on late night screen viewing.
D. advocate late night screen viewing.
参考答案12-15 BCDA
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