摘要:15.D.根据题意.这里表示“自己照顾自己“.故选yourself . 30 Suppose you are going to Boston, and you 1 the city before. If someone 2 you about the interesting places in the city, you 3 to get some ideas of what you will see. But don’t have a 4 idea of where these places are or of how to find 5 . However, 6 someone has a map of the city and 7 you the main roads and buildings, you may say, “ Oh, now I see . I can find my way with 8 trouble at all . Working in math is somewhat like trying to find your way 9 a new city. Perhaps the words may tell you some information and you have 10 it, but you can’t see any clear road 11 the answers. Maybe you 12 a kind of map of the main roads in maths 13 you find your way. Explorewhat lies in maths, and 14 to find the main roads. They will 15 you to the answer. If you can find the “map , the maths problems will be easily worked out.

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