选A。
题面句子翻译:他们说起话来仿佛知己,但实际上他们只是点头之交。
点头之交知道的话直接选A。
其他方法推断:
考察对词性的掌握,nodding是动词nod(点头)的现在分词形式,可以修饰名词,所以选A。B选项是过去分词形式,需要副词来修饰,常见组合为newly aquainted(刚认识的)。
They talked as if they were bosom friends for many years but the truth was that 5
they were just nodding()
A.acquaintance B.acquainted