单选题 .  In any comprehension text you will find words that you don't, know. You can     41    them up in a dictionary, of course,     42    it is a good idea to get     43    the habit of using a dictionary as     44    as possible, particularly if you are preparing     45    an examination. In fact, if you read the text     46    and think, it is usually possible to guess the     47    of most words that you don't know. Look     48    the context of each word—the sentence that it is     49    , and the sentences that come before and after. Look to see     50    the word is repeated     51    in the text; the more often it is     52    , the easier it is to understand.
    Some words     53    be guessed from looking at their     54    , but don't except to be able to guess     55    of the new words in a text. There will be     56    that you can only get a general     57    of, and a few will be impossible. Don't     58    too much time worrying about these; the most     59    thing is to understand the text as a(n)     60    as well as possible, and one or two difficult words will not usually make much difference.41.