题干

图是我国鄂尔多斯(中部某地)地区地质历史时期气候变化与自然地带摆动关系示意图。据图和所学知识回答问题

【小题1】该地区自然地带
A.呈西北-东南方向延伸B.数量的增加与热量相关
C.数量的减少与水分相关D.数量的变化与地形有关
【小题2】该地区

A:湿润期来自西部的水汽增加,使自然地带向西部摆动

B:湿润期森林草原农牧业带扩大,可以大规模进行开垦

C:干燥期沙地面积有扩大趋势,应注意营建防护林体系

D:短时期内发生湿润期和干燥期转变是受全球变暖影响

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答案(点此获取答案解析)

C

同类题3

通读下面短文,掌握其大意,然后在各题所给的四个选项(A、B、C和D)中选出一个最佳选项。

     In New York City public schools, 176 different languages are1 among more than one million students.

     For 160,000 children, English is not their first language. New York's Department of Education 2 learning better for these students by providing dual-language programs. Students are usually taught3 two languages, English and 4, like Chinese or 5. Math, social studies, science and all other 6courses are taught in both languages. And they7the culture of the other country at the same time.

      Milady Baez is Deputy Chancellor of English Language Learners. She says these dual-language programs will help children 8 in the future. "The jobs of the future 9that our students know more than one language. They are going to be traveling 10. They are going to be communicating with people from all over the world. This will open doors for them."

      Shuya Zhang teaches a dual language class. She says the program helps children get ready 11work with people in other countries.   "Nowadays, America has started economic relationships with China. Lots of factories 12. They need people who 13 both practical skills and language skill."

     14these dual-language programs are popular, some groups in the U.S. think English should always comes first. "We have no problem with people speaking multiple (多种多样的) languages. It’s OK if people want to speak15different language at home. What we do think is schools should prioritize English."