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李景jingypoo 回复
天黎
:
6年前
哈哈哈哈
H_ 回复
coco依晨
:
6年前
同意
ouosgh 回复
H_
:
6年前
+1
candicelv 回复
青禾
:
6年前
"was" is ok.
it's not necessary, though, because "previously" is there. so, the sentence is more efficient without it.
candicelv 回复
青禾
:
6年前
of course, nothing in the last post really matters for this exam, which will NEVER task you with stylistic ('good writing' / 'bad writing') decisions.for the gmat exam, the only things that matter are...
...it's acceptable to write 'have' twice, and ...it's also acceptable to omit the second 'have' (unless that omission creates a genuine ambiguity).
王钰儿教师 回复
opacocha
:
6年前
老毕：因为喜欢
opacocha 回复
王钰儿
:
6年前
不是，因为最后答案是35；别的项都约掉了，所以举例的这个数字很关键啊
0不屬於正整數或負整數，但它是整數，通常整數包括正整數、零、負整數三部份， 故此數列為：-4,-3...0,1,2...7
range of the positive integers : 7-1 = 6