【求助】G13_SC #71

freeingdu

OG13语法71题

71. Alongthe major rivers that traverse the deserts of
northeast Africa, the Middle East, and northwest
India, the combination of a reliable supply of water
and good growing conditions both encouraged
farming traditions that, in places, endure in at least
6,000 years.

(A) good growing conditions both encouraged
farming traditions that, in places, endure in

(B) good growing conditions encouraged farming
traditions that have, in places, endured for

(C) of good growing conditions have encouraged
farming traditions that, in places, endured for

(D) of good growing conditions both encouraged
farming traditions that have, in places, endured

(E) of good growing conditions encouraged farming
traditions that have, in places, been enduring
for

正确答案B，也选对了。但是对于OG的解释表示不理解。。。

OG：The time line of this sentence, captred by the use of verb tenses, is of utmost importance.
A combination of factors(in the past) encouraged farming traditions that are still with us today.
The conditions for the use of the present perfect tense have endured are in place.

在此不理解为什么have会放在"，in places,"的前面啊？
顺便求问正确答案划线部分翻译。。翻译整句就更好了~我自己翻译的有点儿乱七八糟的。。。

freeingdu

T-T木有人回答呢~~~