【单选题】Which of the following sentences is INCORRECT? A. Physics is an important school subject. B. The Niagara Falls is in North America. C. The United States borders Canada. D. Mumps is a kind of infectiou...
【简答题】识图完成以下各题。 1. The picture is the map of ________. A. Europe B. Asia C. North America D. South America 2. How big is this continent? A. 10 million square kilometers. B. 24 million square kilometers. C. ...