There are about 40,000 Mosuo people. For centuries they have lived near the Lugu Lake, which lies at 2,700m above sea level. Mosuo people lived together in beautiful mountain villages filled with wooden homes, and they keep many unique customs, not found anywhere else in the world.

One of the most special cultural traditions is zouhun or “walking marriages”. After they are accepted as an adult, usually at the age of 13, Mosuo females can choose their lovers, having as many or few as they wish in their whole life.

During the “marriage”, the woman invites the man to visit her home, and he stays the night in a “flower room”, leaving in the early morning to return to his own home. Couples do not live together. Babies are brought up in the female’s family, with brothers and uncles providing the father’s role.

  ▲   Traditionally, they were often away from the village, travelling in trade carts(地摊推车) to sell local produce. They would also have to do the work of house building and fishing, as well as the killing of animals such as chickens and ducks. Most importantly, still today, while men don’t need to take care of their own children, it’s their duty to make money to raise their sisters’ children living in their own families.

1. What’s the Chinese meaning of the underlined word “unique” in Para. 1?（词义猜测）

A    孤立的.

B    富庶的.

C    常见的.

D    独特的.