______has the worlds largest coral reef "the Great Barrier Reef".
A. Canada
B. Australia
C. Ireland
D. New Zealand
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"If sounds too good to be true, it is." means
A. when something good happens, it is expected to be true.
B. something unbelievably good usually proves to be untrue.
C. it is indeed good, though you can not believe it.
D. something that is true always sounds good.
According to the interviewee, what made the mammography screening decision "a perfect storm"？
A. The timing of the release of the decision.
B. The number of patients involved.
C. The lack of solid evidence.
D. The intervention of the Congress.
Why the Preventive Service Task Force was involved in a controversial issue in 2009？
A. Because it said that early detection of breast cancer was not accurate enough.
Because it warned that middle-age women are of high risk of breast cancer.
C. Because it found that early detection of breast cancer may cause some harm.
D. Because it only looked at the special age group of 40s.
In which way has the Preventive Service Task Force made some changes？
A. The way of getting their input.
B. The channel to release information.
C. The selection of members.
D. The range of their focus.
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