59.SAP often involve a semester spent with a host family which they can experience the local way of life firsthand.

　　during which they

　　点评：“they”不知道指谁，故直接换为“students”。“which”指“semester”，故前加“during”。这种指代问题，千万小心。

　　60.Doctors now realize not only that cholesterol hardens the arteries,but also that it increases the risk of heart attack.

　　Right!

　　点评： 平行结构问题。“not only do…but also do…”和“do not only…but also…”相似但其实不同。注意位置。

　　61.Although we were opposed to the program,we thought that despite its bilateral support,it would accomplish a little.

　　We opposed the program,despite ites bilateral support,because we thought it would accomplish little.

　　点评：句子原意为“尽管该计划如何如何好，我们反对它，因为。。。。。。”先弄清句意。表原因还是用更简单的“because”。

　　62.The tomatoes at this fruit stand are much more plump,fresh and tasty than the fruit stand located in the lobby of the building in which I work.

　　much more plump,fresh and tasty than those sold at the fruit stand located in the lobby of the building.

　　点评：这个句子中比较了多个项目。在多个比较中可以用“much more/less adj+adj+adj+...”的形式。同时注意比较的对象(西红柿和西红柿比)。

　　63.While several baseball teams have tried to supplant the Yankees as the dominant team in baseball,their inability has been unable to win even half as many WS as the Yankees have won in the past one hundred years.

　　they have been unable

　　点评：平行结构，时态，句式一致。

　　65.The U tiger,a relative of the B tiger,has been described as the strongest tiger and also the most peaceful of them.

　　the strongest and yet the most peaceful of tigers.

　　点评：和前面一题类似。

　　66.The price of gold has been influenced by continued inflation and because people have lost faith in the dollar.

　　loss of faith

　　点评：平行结构。

　　67.If we compare the number of alligators with the Gila monsters over time,we see that the alligator is in decline.

　　A comparison overtime of the numbers of alligators and Gila monsters shows that alligators are

　　点评：直接用“comparison”更简洁。同时还是要(老问题了)注意比较的对象。数量必须和数量比。