book 1 units 3-5综合能力测试 ⅱ. 语言知识及应用（共两节，满分35分）第一节 完形填空(共10小题；每小题2分，满分20分) 阅读下面短文，掌握其大意，然后从21-30各题所给的a、b、c和d项中，选出最佳选项。 you may have noticed some changes in your grandparents. as they get old, they start 21 things. and the older they get, the more things they will forget. for example, they may not be able to 22 where they left their glasses, or they may forget the names of your close friends. if you don’t want to 23 memories very early, put down your sandwiches. a new study published in
