47. What is the general complaint about America's math education according to Hacker?
- A. America is not doing as well as China.
- B. Math professors are not doing a good job.
- C. It doesn't help students develop their literacy.
- D. There has hardly been any innovation for years.
答案：A
答案句：“We hear on all sides that we're not teaching enough mathematics, and the Chinese are running rings around us,” Hacker says. “I'm suggesting we're teaching too much mathematics to too many people … not everybody has to know calculus. If you're going to become an aeronautical (航空的) engineer, fine. But most of us aren't.”
参考译文：“我们从四面八方听到，我们的数学教得不够，而中国人正远远超过我们，”哈克说。“我的建议是，我们教给太多人的数学太多了……不是每个人都需要知道微积分。如果你要成为一名航空工程师，那没问题。但我们大多数人不是。”
定位线索：题干“general complaint about America's math education according to Hacker”→答案句取自第4段Hacker原话“We hear on all sides that we're not teaching enough mathematics, and the Chinese are running rings around us”；文中“the Chinese are running rings around us”对应选项A“America is not doing as well as China”。
解析：题干问Hacker认为美国数学教育普遍抱怨什么。答案句直接引用Hacker的话：“我们听到各方说我们数学教得不够，而中国人正远远超过我们”，这明确表达了美国不如中国的抱怨，因此选项A正确。选项B“数学教授工作不力”无中生有，文中未提及教授表现；选项C“无助于培养读写能力”偷换概念，文中提到的是“numerical illiteracy”而非一般读写能力；选项D“多年几乎无创新”文中未提及，属于无中生有。
49. What does Maria Droujkova suggest math teachers do in class?
- A. Make complex concepts easy to understand.
- B. Start teaching children math at an early age.
- C. Help children work wonders with calculus.
- D. Try to arouse students' curiosity in math.
答案：D
答案句：ria Droujkova is a founder of Natural Math, and has taught basic calculus concepts to 5-year-olds. For Droujkova, high-level math is important, and what it could use in American classrooms is an injection of childlike wonder.
“Make mathematics more available,” Droujkova says. ”Redesign it so it's more accessible to more kinds of people: young chil
参考译文：玛丽亚·德鲁日科娃是“自然数学”的创始人，曾向5岁儿童教授基础微积分概念。对德鲁日科娃来说，高等数学很重要，美国课堂需要的是注入孩子般的好奇心。“让数学更易获得，”德鲁日科娃说。“重新设计它，使其对更多类型的人更可及。”
定位线索：题干“Maria Droujkova suggest math teachers do in class”→答案句“an injection of childlike wonder”和“Make mathematics more available”；文中“childlike wonder”对应选项D“arouse students' curiosity in math”（激发好奇心）。
解析：题干问德鲁日科娃建议数学老师在课堂上做什么，答案句指出需要“注入孩子般的好奇心”和“让数学更易获得”，即激发学生好奇心，对应D项。A项“让复杂概念易懂”是手段之一但非核心建议；B项“从小教数学”是她的实践而非课堂建议；C项“用微积分创造奇迹”曲解“wonder”。