题目

10.工业革命开始后，亚当·斯密提出“自由放任”经济政策。在以后的一百多年里，资本主义国家普遍奉行。第二次世界大战后，凯恩斯主义盛行，资本主义国家纷纷加强对经济的干预。20世纪70年代初，面对经济“滞胀”，资本主义国家又减少对经济的干预。这反映出的本质问题是 A．资本主义国家的经济政策摇摆不定 B．资本主义生产关系随生产力发展相应调整 C．没有哪种经济政策可保资本主义经济持续繁荣 D．资本主义国家尝试建立计划加市场的13．Cooking and LearningIn this E-book package，we have four e-books．Fun with FoodThis fun e-book is filled witexercises---photo tests，word exams，riddle games，coloring pages and exercises on learning more about food．Kids Food Science ExperimentsLearn more about science and cooking with these food science experiments and instructions for kids．Food Facts E-BookTo go with the kids cooking lessons e-book，we've put our food facts into one e-book．Each part is easy to print off．You can keep it in the kitchen and teach kids facts about the food we eat．The Food Facts E-Book has over 60 pages．Kids Cooking Lessons E-BookWe've brought all our kids cooking lessons together into one easy e-book．We have a unit for each age group．This e-book is just planned to help you with cooking experience in the kitchen．   If you'd like our lessons in e-book form with some learning exercises and other things，then this e-book is for you．48．Kids canD by reading Fun with Food．A．do science experiments                   B．get cooking experienceC．cook well in the kitchen                  D．play some riddle games49．C has over sixty pages．A．Fun with Food                         B．Kids Cooking Lessons E-BookC．Food Facts E-Book                     D．Kids Food Science Experiments50．Kids Cooking Lessons E-Book is popular becauseA．A．there is a unit for each age group           B．there are a lot of photo tests in itC．kids can learn more about science         D．each part is very easy to print off．