题目

第二节 完形填空 (共20小题；每小题1分，满分20分)    阅读下面短文，从短文后各题所给的四个选项(A、B、C、D)中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。 After my husband died suddenly from a heart attack, my world crashed around me. I was overwhelmed (不知所措) with the   16   of earning a living,   17   the little children. One   18   evening I came home from work to find a big beautiful German shepherd (牧羊犬) on our   19  . This wonderful strong animal   20   to enter the house and m如图为菜豆玉米种子结构图，据图答题． （1）找出甲乙中相对应的结构用号码和短线表示出来 ．（2）1，2，4，5将来发育成 ，5的作用是 ．（3）玉米储存营养物质的结构是[ ] ，所储存的营养物质的特性是 ．