题目

71. After his ____(退休), David stayed busy, running a dairy farm near Cincinnati for 20 years. 72. The price of the house is__________ (合理的) and I love its garden in particular. We can grow flowers and vegetables there. 73. What _________ (百分比) of the population in China are farmers? 74. Honggutan District and Donghu District are both the ___________ (商业的) heart of Nanchang City. 75. He made a new invention and applied for a _________(专利). 76. There were more than 50 a___________ for the job, but in the end only 10 were employed. 77. China is a s__________ cou读“地球绕日公转示意图”，完成下列问题。（1）在赤峰地区每年“寒来暑往，天气逐渐变冷”这一现象的产生与下列因素相关的正确组合是（ ）①是地球自转产生的②是地球公转产生的③此时太阳直射点正在向北回归线移动④此时太阳直射点正在向南回归线移动A.①④B.②④C.①③D.②③（2）从南极上空看，地球自转的方向是（顺或逆）时针；自转的周期是。（3）当地球运行至图中丙位置时，内蒙古自治区是（填节气名称），此时南极圈以内会出现现象。