Coupons, according to Dave Lieberman, are to encourage the consumers to ______.

三萜皂苷的专属反应是 A: Lieberman反应 B: 三氯乙酸反应 C: SbC15反应 D: Baljet反应 E: 以上都不是

The election could actually end up being decided in the U.S. Congress. Al Gore’s vice presidential running mate, Joe Lieberman, and perhaps Mr. Gore himself, would be able to vote on the matter. Some would argue that they should recuse themselves, but they would probably exercise their right to vote. What does “recuse” mean? A: step aside and not be involved B: admit that you are wrong C: leave the country D: insist on being heard