核心词汇
1．We ____________(应该把……归功于)to Newton the principle of gravitation．
2．The old man was utterly a__________ in the book.
3．We’ll have an ____________(机会)to exchange views tomorrow.
4．During the storm the ship ____________(离开正道)from its course.
5．The fierce ____________(外观，样子)of the salesman frightened the customer off.
6．The old lady is very ____________(谨慎的)with money.
