题目

下图描述的是某生活必需品的需求曲线。假设其它条件不变，且该商品市场尚未饱和，则下列事项中能引起D1向D2平移的是（   ） ①该商品的互补商品价格下降 ②政府提高了该商品的消费税 ③生产该商品的行业供应量减少 ④增加中低收入者的收入 A．①②    B．②③    C．①④    D．③④ 答案：C 【解析】该商品的互补商品价格下降，对其互补商品的需求量增加，对该商品的需求量也会增加，①正确；收入是消费的基础和前提，收入增加，需求量增加，④正确；提高该商品的消费税，对该商品的需求量会减少，②错误；该商品的供应量减少，商品价格会上涨，对该商品的需求量会减少，③错Foreign language study starts at a very young age for many students in America. A report by the America Council on the Teaching of Foreign Languages says that some students start language training at the age of six. The US students are not required (被要求) to receive foreign language training so early. However, many students choose to study foreign languages in primary school. The most popular languages for them are Spanish(西班牙语), French and German(德语).Almost 7 million students in public secondary school in America are studying a foreign language. These students are from 12 to 17 years old. Nearly 70% of the students choose to study Spanish. French, German, Italian(意大利语), Japanese(日语) and Russian(俄语) are also popular. There is also a growing interest in the Arabic(阿拉伯语) language in the US.Each state(州) sets its own requirements for foreign language study at junior high school senior high school. Many students graduate from high school with at least two years of foreign language study. Some study a foreign language for four years.There are different foreign language study requirements at colleges and universities(大学). Some universities require students to have several years of language education in high school. Also, many colleges and universities require students to complete at least two years of foreign language study before graduating.1.In America, many students start to study a foreign language ___________.A. at a very young age B. at the age of 8C. in high school D. in secondary school2.The America report shows that ___________.A. parents are too strict in their children’s studiesB. some students start language training earlyC. some students have a special love for foreign languagesD. the US should build more schools for language learning3.In the US, ___________ is the most popular foreign language in both primary and secondary schools.A. German B. French C. Spanish D. Japanese4.In America, many college graduates ___________.A. needn’t get foreign language trainingB. are interested in learning foreign languagesC. have learned different languages for 3 yearsD. have at least 2 years of foreign language study5.From the passage we can learn ___________.A. learning a foreign language at a very young age is good for childrenB. many American parents choose Arabic (阿拉伯语) for their children to studyC. Some US universities require students to learn several languages in high schoolD. in the US, different states have different requirements for foreign language study