单项选择题 Juliet is not at work. She is taking a （）until the end of this week.

单项选择题 The United States Food and Drag Administration has shown itself to be particularly wary with regard to alleged "miracle" drugs in recent times（）

单项选择题 The 1982 Oil and Gas Act gives power to permit the disposal of assets held by the Corporation, and the Corporation’s statutory monopoly in the supply of gas for fuel purposes so as to permit private companies to compete in this supply（）