单项选择题

What happens to nitrogen in body tissues if a diver ascends too quickly

A．It forms bubbles.
B．It goes directly to the brain.
C．It is reabsorbed by the lungs.
D．It has a narcotic effect.
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单项选择题
It can be inferred from the passage that which of the following presents the greatest danger to diver
A．Pressurized helium.
B．Nitrogen diffusion.
C．Nitrogen bubbles.
D．An air embolism.
单项选择题
The best title for this passage would be ______.
A．The Importance of Being Visible
B．Role of Women and Minorities in Management
C．Job Performance and Advancement
D．Sex and Career Success
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