题目

It is said that potato chips ______by mistake about a hundred years ago. A. invent                                                                  B. invented C. are invented                                                          D. were invented 答案：D  句意：据说薯片是大约一百年前偶然被发明的。本题考查动词的时态和语态。由时间状语a hundred years ago可看出句子应用一般过去时；potato chips与invent构成被动关系，故选D项。关于欧洲西部旅游景点的说法，正确的是（　　）A．英国的峡湾风光引人入胜B．伦敦的艾菲尔铁塔令人景仰C．南部地中海沿岸国家的海滨沙滩优美宜人D．芬兰的花卉尤其是郁金香闻名世界