Chimpanzees in western Africa's Tai forest crack nuts by placing them on tree roots and striking them with stones,a learned behavior [probablyl unique to chimpanzees in that area].A.probably unique toB.probably unique aboutC.probably it is unique to

Chimpanzees in western Africa's Tai forest crack nuts by placing them on tree roots and striking them with stones,a learned behavior [probablyl unique to chimpanzees in that area].A.probably unique toB.probably unique aboutC.probably it is unique to
Chimpanzees in western Africa's Tai forest crack nuts by placing them on tree roots and striking them with stones,a learned behavior [probablyl unique to chimpanzees in that area].
A.probably unique to
B.probably unique about
C.probably it is unique to
D.that is probably unique with
E.having probably been unique to
请问这个Unique有什么固定搭配吗?我用排除法已经排除了CDE,就是在AB两者之间纠结...

Chimpanzees in western Africa's Tai forest crack nuts by placing them on tree roots and striking them with stones,a learned behavior [probablyl unique to chimpanzees in that area].A.probably unique toB.probably unique aboutC.probably it is unique to
be unique to 特有的,独特的,如：The custom is unique to China.

应该是be unique to...没有about...

个人觉得选A
a learned behavior [probablyl unique to chimpanzees in that area].
一种 “可能对那区域的黑猩猩来说是必学的唯一的”行为。
大概就是说前面forest crack nuts by placing them on tree roots and striking them with stones这是...

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个人觉得选A
a learned behavior [probablyl unique to chimpanzees in that area].
一种 “可能对那区域的黑猩猩来说是必学的唯一的”行为。
大概就是说前面forest crack nuts by placing them on tree roots and striking them with stones这是它们所特有的行为，
a learned behavior应该是forest crack nuts by placing them on tree roots and striking them with stones的同位语，表示这种行为
然后后面再用定语从句修饰是怎样的一种行为呢
a learned behavior which is [probablyl unique to chimpanzees in that area].
或者不用从句，直接用形容词作后置定语
a learned behavior probably unique to chimpanzees in that area].
sth. adj. to sb.
先把probably 忽略掉，
a learned behavior unique to chimpanzees in that area].
unique to sth. 对。。。而言是唯一的
这个应该就像平时见的那种 sth. is important to sb.
to 有对。。。来说的意思

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