1 . He knows little about American literature. No wonder your lecture was beyond his c______.(根据首字母单词拼写)

2 . You as a teacher should try your best to find some e________ (有效的) ways to improve your classroom construction. （根据中英文提示填空）

3 . He argues that family problems are t________(adv.一般，通常) a comment on some unresolved issues in the family. (根据中英文提示单词拼写)

4 . These new revelations could have a big i________(n.作用) on human digestive health research and manufacturing. (根据中英文提示单词拼写)

5 . The voices sounded really u_________(adj.独特的), some of which were so high that I was sure they could break glass! (根据中英文提示单词拼写)

6 . There are many Easter traditions and________(风俗). The most typical food is Easter eggs. The rabbit is also a symbol of Easter. (根据汉语提示单词拼写)

7 . Geigl and her colleagues looked at 3200-year-old fossil bones b________ to a single individual of an extinct cattle species called an aurochs. (欧洲野牛) （根据首字母单词拼写）

8 . They tended to lose cognitive (认知的) f________ at a much slower rate than those with the least mentally challenging jobs. （根据首字母单词拼写）