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题库 / GMATAdvanced-SC-43
Avalanches at Rogers Pass in Glacier National Park killed more than 200 people between 1885 and 1910, but they are now controlled if not prevented; cannons are fired at the slopes to make snow masses fall before they become dangerous.
Avalanches at Rogers Pass in Glacier National Park killed more than 200 people between 1885 to 1910, but they
More than 200 people have been killed by avalanches between 1885 and 1910 at Rogers Pass in Glacier National Park, but they
Between 1885 and 1910, more than 200 people were killed by avalanches at Rogers Pass in Glacier National Park, but they
More than 200 people have been killed by avalanches at Rogers Pass in Glacier National Park between 1885 and 1910, but such avalanches
Avalanches at Rogers Pass in Glacier National Park killed more than 200 people between 1885 and 1910, but such avalanches
考察：
时态；词组；代词；
a；between and而不是to；
b；they指代不清；一直强调的，看到其他选项有用具体名词替代了they-“but such avalanches”， 那么用they的选项肯定有问题了。
c；同b；
d；小心看；时态错误，过去的时间段用了have been；时刻注意做题的steps以免漏掉没考虑的aspect
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