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题库 / OG2018V-SC-292
The North American moose's long legs enable it to move quickly through the woods, stepping easily over downed trees, but predators pursuing it must leap or go around them.
moose's long legs enable it to move quickly through the woods, stepping easily over downed trees, but predators pursuing it must leap or go around them
moose's long legs enable it to move quickly through the woods, stepping easily over downed trees while predators pursuing them must leap or go around
moose's long legs enable it to move quickly through the woods and to step easily over downed trees, but predators pursuing them must leap over or go around them
moose has long legs, enabling it to move quickly through the woods and to step easily over downed trees while predators pursuing them must leap or go around
moose has long legs that enable it to move quickly through the woods, stepping easily over downed trees while predators pursuing it must leap over or go around them
所有格名词 moose‘s这种格式的，是不能被指代的 it its that those...都不行。排除ABC
D中，enabling的主体是legs，不能做the moose has的状语
them指代 trees
第一个代词 it 应该指代的是 moose, 但是在 A, B, C选项中，moose 都是以所有格 moose's 的形式出现的，it 不能指代所有格，错误。
第二个代词，predators pursue moose, moose 在句中是单数名词，所以代词要用 it, 而不是 them. B, C, D 错误。( moose 既可以做单数也可以做复数名词，但是本句中的动词和代词搭配都将其视为单数名词）
最后一个代词 them 根据句意，应该是修饰 downed trees. 但是 A, C 选项中，downed trees 和 them 之间都有逗号隔开，导致 them 指代对象不明确。
2. 本句第二个问题在于动词 leap 和 go
leap 和 go 都是不及物动词，但是后面接的介词不一样，应该是 leap over, go around, 在并列结构中要分别保留两个介词 A, B, D 错误。
B选项：them指代不明确，应该it,来指代moose
C选项：them不能指代单数名词
D选项： them换成it;leap换成leap over;
画线句：主语,it,状语从句，but
选项：b.-;c.but???X;d.
第一个IT ABC中无指代。D错误的用了them
刚刚回复错了…这句我认为可以翻译成 然而它的捕食者必须跳跃或者围绕着那些树（就不像它一样可以灵活的停在那里）
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