Why do people of heart disease often feel uncomfortable while taking a flight
A: Because low pressure can cause the air in body cavities to expand.
B: Because medical devices implanted in their bodies expand.
C: Because they tend to sit too long in a cramped position.
D: Because the amount of oxygen flowing through their blood vessels is reduced and thus causing chest pains.
A: Because low pressure can cause the air in body cavities to expand.
B: Because medical devices implanted in their bodies expand.
C: Because they tend to sit too long in a cramped position.
D: Because the amount of oxygen flowing through their blood vessels is reduced and thus causing chest pains.
举一反三
- Why is heart disease the most dangerous killer in the United States A: Because American people drink too much spirits. B: Because there are a great number of fat people there. C: The author doesn't give a definite answer. D: Because American people eat too much fatty fish.
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- 2016-12-19 A: Because the salary is too low B: Because the company is too small C: Because she has to travel abroad frequently D: Because a tour guide has to work long hours.
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- Why is yoga regarded by some people as the ultimate workout A: Because you have to do meditation all through the practice time. B: Because there are many modern versions of yoga as well as traditional ones. C: Because it involves both your body and your mind.