单项选择题The couple foiled to meet each other as previously arranged due to________.
单项选择题The researchers find that there are stronger connections between
单项选择题According to the author which of the following is inevitable
单项选择题Gypsies are united only when they
单项选择题A.to tighten control on tobacco advertising.B.to impose penalties on tobacco companies.C.to start a national anti-smoking campaign.D.to ensure the health of American children.