Preserving more habitats for China’s giant pandas is providing a giant payoff.     1     (save) the giant panda from dying out isn’t just good for the panda, but it’s also good for economy, a new analysis by an international team of scientists shows.

The results     2     (publish) in the magazine Current Biology, stress the economic benefits that go hand in hand with environmental     3     (protect). Giant pandas are one of the rarest species around the world. But pandas fell on hard times in recent decades, thanks largely     4     human encroachment (侵入). In 1980 alone, many habitats     5     (destroy) artificially, and in 1990, their habitats covered only 12,340 square kilometers, which is a major threat to the pandas in large part because bamboo, their main food source, is so low in nutrients     6     they must wander a lot of land in order to find and eat enough of it.

Because of this, Chinese officials began making     7     (significance) efforts to save the panda from extinction, establishing more reserves and increasing the reserve area three times. Panda numbers     8     (gradual) began to recover, hitting 1,596 in 2000 and 1,864 in 2010.

“    9     is clear that society’s investment (投资)     10     (start) to pay off so far in terms of panda population recovery”, the study authors said.

The spider monkey has long, thin arms with hook-like hands that allow it to swing (摇摆) through the trees. It has a prehensible (缠绕性的) tail, which means it can grasp and can be used like a     1    (five) leg to grab trees. During the day, the spider monkey searches     2     fruits, which make up the main part of its diet. They will also eat flowers, seeds, leaves, and small insects during the dry season     3     fruits aren’t available. They spend most of the daylight hours climbing and swinging through the high branches of trees.

The brown-headed spider monkey lives in a large community of about 20 to 100 male and female monkeys. Females     4    (normal) give birth to only a single baby each year or two. Young monkeys are carried on their mothers’     5    (stomach) until about 16 weeks old. Then they are strong enough     6    (ride) on their mothers’ backs.

Spider monkeys hug each other and wrap their tails around each other. They are very     7    (intelligence) and have strong memories. They are named spider monkeys     8     they look like spiders as they hang upside down from their tails with their arms and legs     9     (swing).

Now hunting the brown-headed spider monkey is forbidden in Ecuador,     10     country in northwestern South America, but humans have killed them for their meat for hundreds of years.