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Read the article below and choose the best sentence from the list on the next page to fill each of the gaps. For each gap(1-
Read the article below and choose the best sentence from the list on the next page to fill each of the gaps. For each gap(1-
admin
2019-03-04
21
问题
Read the article below and choose the best sentence from the list on the next page to fill each of the gaps.
For each gap(1-8)mark one letter(A~H)on your Answer Sheet.
Do not mark any letter twice.
Seasick? Try Controlling Your Breathing
If you get seasick easily, you may prepare for boat rides with pressure-point bracelets, ginger, or a prescription skin patch.【R1】______The technique presumably works because it helps control gravity sensors in the abdomen - a lesser-known input to our fine-tuned balance system.
【R2】______The inner ears sense motions of the head; the eyes see where the head is; and tiny sensory organs in muscles and tendons sense where the rest of the body is. More recently, researchers have realized that sensors in many other parts of the body also play a role: in the abdomen, the lower organs, and even blood vessels.【R3】______But if one or two don’t match up, the brain gets confused and we become nauseated.
Scientists knew the most sickening motions closely match the rate of natural breathing; they also knew that people naturally tend to breathe in time with a motion. 【R4】______
Researchers from Imperial College London enlisted 26 volunteers to sit in a tilting, rocking flight simulator and coordinate their breathing in various ways with the motion.【R5】______The natural tendency was for volunteers to inhale on every backward tilt, in rhythm with the rocking.【R6】______They felt even better if they breathed slightly faster or slower than the cyclic heaving of the chair; using that technique, the time until onset of nausea was 50% longer than during normal breathing.
【R7】______Abdominal sensors are known to send motion signals to the brain more slowly than those in the inner ear because they’re farther away from the brain and because abdominal organs have more mass, which means they resist movement a tiny bit longer.【R8】______But if the diaphragm opposes gravity-induced stomach motions with controlled breaths, there is less sensory conflict and less nausea. "This technique is very good for mild everyday challenges," says medical research scientist Michael Gresty, a member of the study team. "It’s completely safe, and it’s not a drug."
A. But if the subjects exhaled on every backward tilt, they didn’t get sick as quickly.
B. As long as all of these sensors send matching signals to the brain, we feel oriented.
C. Now there’s one more remedy: timing your breathing to counteract the nauseating motion.
D. So why do these tactics work?
E. The brain is traditionally thought to sense body position in three ways.
F. The time lag between the two types of sensors creates a mismatch that builds up in the brain and makes us gradually sicker, the researchers say.
G. The tests lasted up to 30 minutes, or until subjects felt moderately sick.
H. But no one had ever tested whether breathing out of time with a motion could prevent nausea.
【R3】
选项
答案
B
解析
转载请注明原文地址:https://kaotiyun.com/show/fa9d777K
本试题收录于:
BFT阅读题库国际化人才外语考试(BFT)分类
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国际化人才外语考试(BFT)
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