题目

北极圈穿过美国的哪个州(     )        A．加利福尼亚州           B．阿拉斯加州          C．夏威夷州      D．华盛顿州 答案：B．Most people interviewed said: “We have been warned all about the effects of sunbathing, yet we keep putting ourselves ___ .” A.at play      B. at risk       C.at peace         D.at work