题目

 根据句意和首字母提示补全单词。 1. We use the e_________ to go up and down the building. 2. look! It’s raining outside, you’d better put on your raincoat or take an u______. 3. If you want to know the answer to the problem, you should look t______ books in the library. 4. Would you like to come and meet my parents and have a f_________ dinner with us? 5. When the t_________ lights are red, you must stop and wait. 6. There is one child a_________ in the room. 7. There are m________ of reasons for me to stay. 8. We were filled with g ________ when we heard of h已知向量，．若向量，则实数的值是 　     ．