从以上单词中选出最适当的一个单词,填入空格内.
1 You'd better ( ) to the dictionary for the meaning of the word.
2 The red lines on the map ( ) railways.
3 The fort was ( ) against any surprise attack.
4 I expect your ( ) answer to my question.
5 There is a ( ) of grain because of poor crops.
答案：
1 You抎 better (refer) to the dictionary for the meaning of the word.
2 The red lines on the map (represent) railways.
3 The fort was (secure) against any surprise attack.
4 I expect your (prompt) answer to my question.
5 There is a (shortage) of grain because of poor crops.
