Question

.She ______ his number in the phone book to make sure that s？

Answer 1

look for 寻找
She is looking for her lost child.
她正在寻找失去的孩子.
look up 查询
If you don't know a word,you can look it up in a dictionary.
如果你有不识的字,可以查字典.
所以呢 这题选B,1,look up是查阅的意思，是从一些事物中找出来，而look for是寻找的意思，没有一个固定的范围，此题是从电话本中找出一个号码，所以选look up,2,固定搭配，通常要表达查阅字典、单词、号码等都用look up
look up有查阅的意思，常用look sth. up in
look for 则多指寻找，没有查阅的意思
记住就好了，翻译成中文都有寻找的意思，用的地方不同罢了,2,look for 是期待的意思，
look up 是查的意思，
句中明显是查电话本,1,look for 不一定找到,look up 表示已找到.,1,b,1,look up一般在已知或已有的东西里查找
look for一般在未知或未有的东西里寻找
例如：
1. look up
If you don't know a word, you can look it up in a dictionary.
如果你有不识的字,可以查字典。
2.look for
She is looking for her ...,0,.She ______ his number in the phone book to make sure that she had got it right.
A.looked for B.looked up