0505语法题居然有两道题两个地方都出错

zxmboshiUID: 2143427

31. By 1996, the United States population （exceeded） 261 million, with a median （age of） thirty-four, （making） it one of the oldest national （population ）on Earth.
很明显population应改为populations，但是如果让国内的英语老师来做这个题，他们绝对会认为（exceeded）也是错的，应该是had exceeded 因为by+时间，后面应该用完成时态，估计ETS根本没考虑这一点，实际上很多老美自己写的东西都错，0501阅读题第一题我就发现了一个明显错误的句子！
22. At present, about 300 (different) varieties of (dinosaur) have been identified from (bones found) on (every) of the continents.
首先
dinosaur绝对有错，它是一个可数名词，它和fish不一样，fish既可作单数也可复数！dinosaur复数就是dinosaurs!
其次，erery错了。因为every只能做形容词，它不能做代词，个each不一样！each是可以做代词.如each of us is going to see a film！但不能说every of us is going to see a film!只能说every one of us is going to see a film!

approachUID: 2101189

31那个,在以前的一个语法题中有过相同的情况,前面用的BY,后面也没用完成时,而且当时那个题也是把没用完成时的动词划上了,也没选,不明白怎么回事,等我再查查那是哪个题里的吧,反正肯定是有过一个一样的现象.貌似ETS在TOEFL的语法里就容许这样用似的....

zxmboshiUID: 2143427

approachUID: 2101189

35. By 1900 several prominent technical institutions, including the Massachusetts Institute of Technology, fashioned its own educational offerings to meet the industrial needs of the United States.
                                          ---------------0401(35)
25. By the end of the 1950"s, the suburban population of the United States totaled 60 million, approximately equivalence to the urban areas of the country.
                                             -------------------0408(25)

在这两个题中,BY 和那个动词都 没算错.估计0505的时候他们也是这个思路的吧.