单项选择题

Dr. Scott Solomon and his colleagues found that _________.

A．Bextra can be used in heart surgery.
B．4 percent of those given placebo had an adverse event.
C．Celebrex worked as well as aspirin to prevent colon cancer.
D．Celebrex doubled or even tripled deaths from heart attack, stroke or heart failure.

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热门试题

单项选择题

Why did Merck & Co. Inc. pulled Vioxx from the market this September.

A．Because they learned the results of Dr. Jeffery Draze's trail.
B．Because Vioxx has proved a useless drug in trails.
C．Because trails showed that Vioxx almost doubled the risk of heart attacks, strokes and other major adverse events.
D．Because Merck&Co. Inc. could not make any money from the drug.

单项选择题

We can infer from the passage that Delta Society Pet Partners program aims at _________.

A．helping patients at hospitals by providing them with trained animals.
B．registering all the pet owners in the U. S.
C．selling and buying pets.
D．motivating people to have a more colorful life.