阅读下列短文,从下面每题的 A、B、C、D四个选项中选出最佳选项。Spider monkeys are New World primates(灵长类). They get their names because they have very long limbs(四肢) and tails, which make them look like spiders. They are often seen with their limbs on different branches.
Spider monkeys can be in tropical forests of Central and South America, from southern Mexico to Brazil. They are 35 to 66 centimeters long and weigh 13 to 26 pounds. They have long tails that they use to catch tree branches, kind of like a 5th hand.
Spider monkeys live in groups. One group usually has dozens of spider monkeys. They communicate with each other through screeches (尖叫声). At night, spider monkeys break off into smaller sleeping parties of about half a dozen or fewer. Unlike many other primates, males (雄性) stay together throughout their lives with the females. They leave their first groups to find another group.
When they go out to look for food, spider monkey groups take separate actions in order to avoid competition for it. They mainly eat fruit and nuts. They also eat other things like insects, honey, leaves, spiders and bird eggs. Spider monkeys actually play an important part in the spreading of seeds throughout the South American rain forests. Enemies that they need to keep an eye out for include animals like lions and crocodiles.
Spider monkeys are dying out. Woodcutting, which leads to the loss(丧失) of their natural living places, is playing a big role in their loss. These monkeys are also hunted for food, or to sell as pets. Spider monkeys are actually one of the most popular monkey pets around because of their look and their behavior. We must do something to protect them. After all, such good and interesting monkeys should live with humans for many years to come.