13．Many textbooks are not written in the kind of English that we speak every day．In fact，sometimes the reading is so difficult that it almost seems like a foreign language．In a way，it is the language of science．You should not expect to be able to read a difficult science passage the same way you read an interesting story； you should not expect to read it easily and all at once．Instead，you may have to read it several times through，catching on the meaning of difficult words，going back over difficult sentences，and finally putting the whole thing together．Do not be discouraged if the whole passage doesn't make sense to you at first．You need to take it apart patiently until you can understand it．
◇1．These are the steps to follow when you are reading something difficult：
◇2．Start to read normally until you run into a sentence that doesn't make sense to you．
◇3．When a sentence doesn't make sense，go back and read it again more slowly．
◇4．Look for any word you don't know in the sentence．Try to understand their meanings using word parts and context clues（上下文线索）．If necessary，look them up in the dictionary．
◇5．Look at the next few sentences to see if they explain more about the sentence you are working on．Do not read very much farther ahead until you understand what is being said．
◇6．Finally，read the sentence again．Try to put it into simpler words．
◇7．Read through the passage once．Try to understand all the hard parts well．Then read the whole passage once more at a usual speed．This helps you to put all ideas together．
The steps sound a lot harder than they are．It is really just the normal way good readers understand anything that is difficult to read．After you have done the best you can this way，you should always feel free to ask for help from your teacher，if you have one．
29．From the passage，we can knowB．
A．we should look up new words before reading
B．it is sometimes difficult to read a science passage
C．the six steps are helpful in learning spoken English
D．interesting stories help readers to improve their English
30．The passage is mainly aboutC．
A．steps of studying science
B．difficulties in reading science
C．ways of reading science passages
D．researches on science and English．
分析 我们在平时的阅读中可能会遇到比较难的文章，尤其是科普文章，本文主要告诉我们如何阅读比较困难的文章．
解答 29．B细节理解题：根据第一段的In a way，it is-the language of science．You should not expect to be able to read a difficult science passage the same way you read an interesting story； 可知阅读科普文章有时比较难．故选B
30．C主旨大意题：根据第二段的These are the steps to follow when you are reading something difficult：可知这篇文章讲的是阅读科普文章的方法．故选C
点评 做题时首先要仔细阅读短文，掌握大意，然后结合具体的题目，找出相关信息，就可以确定正确答案．
