The word "deference"(Line 1, Paragraph 5)most probably means
A. respect.
B. reference.
C. connection.
D. restoration.
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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.
The sentence "A revealing trail of debris could give the game away"(Lines 2-3, Paragraph 1)shows that
A. the athletes who cheat will lose the game because of a trail of debris.
B. the athletes who cheat have to give up the game because of a trail of debris.
C. a trail of debris will help catch out the athletes who cheat.
D. a trail of debris will help the athletes avoid the game.
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