What do we learn about this test from David Cowans comment？
A. The test is promising and could be adopted right away.
B. The test is far from meeting the rigorous standards required by sport.
C. The test needs to be improved in the hope of not wronging an athlete.
D. The 2012 Olympics in London will adopt such anti-doping test.
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The word "deference"(Line 1, Paragraph 5)most probably means
A. respect.
B. reference.
C. connection.
D. restoration.
Which of the following is true according to Paragraph 4？
A. Illegal immigrants have more chances to stay permanently in the U.S. than guest workers.
B. With stepped-up border control, illegal immigrants are more likely to stay in their homeland.
C. Workers in temporary-worker programs usually pay no attention to their visa duration.
D. Guest workers will not stay too long because of the enhanced border enforcement.
The difference between modern cell phones and old phones lies in that
A. it requires more intelligence and education to use modem cell phones.
B. it takes more weeks to get familiar with modem cell phones.
C. modem cell phones are more complicated with many functions.
D. modem cell phones are more mysterious tools for people.
Which kind of "blood dopers" is least likely to be detected in the past？
A. People who inject themselves with EPO.
B. People who extract and re-inject some of their own blood.
C. People who took part in cycling competition in Spain in 2006.
D. People who are careful enough to avoid detection.
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