Ken is my friend. He ____ (come) from London, UK. Five years ago I ____(meet) him at Lily's party. Then we ____ (become) good friends. Ken and I ____ (reach) Washington D.C. at the same time. We____ (start) to study medicine in the same school. Now we are still studying together. So I know more about him. Ken is funny He often ____ (make) up some interesting stories to make me laugh. He says he's not going to be a doctor when he graduates (毕业). He ____ (want) to be an actor. He ____ (take) acting lessons when he is free. He ____ (make) lots of funny movies to make people happy. I believe his dream ____ (come) true.

创新是民族和国家进步发展的不竭动力，实施创新驱动发展战略，是增强中国经济发展内生动力的一项措施。科技创新是提高社会生产力和综合国力的战略支撑。在日趋激烈的国际竞争中，我国必须以全球视野谋划和推动创新，加快从经济大国走向经济强国。

结合材料，运用《文化与社会》的知识，说明我国为什么要着力谋划和推动科技创新。

“充分利用各地自然条件优势，因地制宜发展生产，是我国农业必须遵循的基本原则．”按照这一原则，我国西北地区适宜发展（　　）