A. when they have received satellite pictures B. during they study satellite pictures C. after they have compared new satellite pictures with earlier ones 参考答案:C 答案解析:[精解] 题干的意思是气象学家何时预报天气。A的意思是当他们接收到卫星图片时,B的意思是在他们研究卫星图片的过程中,C的意思是在他们和早期的卫星图片比较后。文中的相关细节为"When they rec
A. spend all her time and money on her only child B. be responsible for bringing up her only child C. have and bring up only one child D. put all her energies on her job 参考答案:C 答案解析:[解析] 文章最后一段有提示,即随着working mothers increasing,导致only children become common。