1. Big Book的P.543 11题 比大小 A certain car gets 24 miles per gallon of gasoline for city driving, which is 60 percent of the number of miles per gallon of gasoline the car gets for high way driving (A) The number of gallons of gasoline used to drive this car 30 miles in the city (B) The number of gallons of gasoline used to drive this car 45 miles on the highway 答案是A，不过题目看不太懂 2. B Book p.605 15题 比大小 John has a flat square garden with a perimeter of x feet.David has a flat rectangular garden with a perimeter of x feet and the length 1 foot longer than the width. (A)The area of John's garden (B)The area of David's garden 答案是A，这题想问的是，是不是只要周长相同的正方形及长方形面积比较， 一定是正方形面积比较大? 3. B Book p.665 14题 比大小 A certain store sells each pencil at the same price regardless of the number of pencils sold.k of these pencils have a total price of q cents, and r of these pencils have a total price of s cents. (A)ks (B)qr 答案是C，指两边一样大，题目不是说不论买几只笔每只价钱都一样吗？如果是这样答案不 是应该是D吗？还是他的意思是不论买几只笔总价都一样？ 4. B Book p.760 30题 An emergency vehicle travels 10 miles at a speed of 50 miles per hour.How fast must the vehicle travel on the return trip if the round-trip travel time is to be 20 minutes? (A)55mph (B)60mph (C)65mph (D)70mph (E)75mph 答案是E，题目不太懂，他说去程10miles以速度50miles/hr开，回程以20分钟开完 ，那不是速度要更慢吗？ 5. B Book p.992 27题 W ─┌──────────┐ Top of Page ↑│ │ │├──────────┤ ││ │ │ │ ││ │ │ │ H │ │ │ │ ││ │ │ │ ││ │ │ │ ││ │ │ │ ↓│ │ │ │ ─└──────────┘ Bottom of Page The figure above shows the dimensions of a page that has been divided into four rectangular advertising spaces of equal area.What is the height, in terms of h, of one of the advertising spaces at the bottom of the page? (A)1/4 h (B)1/3 h (C)1/2 h (D)2/3 h (E)3/4 h 答案是E，题目是说每个长方形的长跟宽都一样吗？不会解.. 希望各强者帮我解答，感谢~ --

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