Goodbye in the wild
Humans have many ways to say “hi” and “bye”. It’s a way to be polite. But did you know that apes (大猩猩) also do this?
According to a new study, we have found this kind of behavior (行为) in animals for the first time. Many animals greet each other, but they don’t say “goodbye” like apes do.
Scientists studied over 1,200 apes. Of course, they don’t say “What’s up?” like we do. They use body language.
For example, they will touch each other or hold hands. They might also butt(顶) heads or just look at each other. They do these things both before and after they spend time together. These greetings will be shorter if the apes already know each other. Humans do this too.
Scientists say that the common ancestors (共同祖先) of apes and humans might have done this as well. Then they passed down the habit to both of us.
Our ape cousins
Apes can do many things just like us. Here’s a list of some of their “human” behaviors.
Make tools (工具) to help them finish tasks
Eat junk food (垃圾食品) when they’re unhappy
Recognize (识别) faces
Beg for food
Laugh out loud
【小题1】What does the new study show?A.Apes say “hi” and “bye” like humans. | B.Animals don’t greet each other. |
C.Animal behavior is hard to study. | D.Apes enjoy saying “goodbye“ to other animals. |
A.tell us how to study apes | B.show how apes do exercise |
C.show how apes greet each other | D.tell us what body language is |
A.Because they don’t like each other. | B.Because they already know each other. |
C.Because they are lazy sometimes. | D.Because they want to save time. |
A.经过 | B.坚持 | C.养成 | D.传递 |
A.Apes like to make friends with humans. | B.Greetings are important to animals. |
C.Apes have different ways to say “hi”. | D.Humans learned to greet each other from apes. |
If you look up into a tree, you can often see animals like squirrels and birds. But you may see a very different animal in the argan tree(摩洛哥坚果树)in Morocco: goat! Goats climb the branches to eat the fruits.
The argan tree can be up to 30 feet tall and it only grows in southwestern Morocco(摩洛哥). This area is quite dry and hot. There is not much food for goats in the part of Morocco. So when argan fruits ripen(成熟), the goats carefully climb up the argan trees and eat the yellow and dark brown fruits of argan trees.
These goats cannot digest the nut(坚果)inside the fruit. However, they spit out(吐出)the nut. Farmers collect these nuts and get the seeds inside them. And they use the seeds to produce argan oil. Argan oil has become popular around the world. This oil is used in cooking. It is also used as a skin and hair cosmetic(化妆品).
Although these goats help farmers produce argan oil, there are other problems because of their tree climbing. Goats often spend about 6 hours on the branches of these trees. Their hooves(羊蹄)hurt the tree’s branches. These tree-climbing goats attract(吸引)tourists so farmers brought in more and more goats to this area. That is also not good for the health of the argan trees. Argan trees are in danger. Some scientists are trying to save these trees. Hopefully these trees will keep healthy and these goats will continue enjoying these fruits for many years to come!
【小题1】Moroccan goats climb the argan tree to ________.A.look around | B.attract tourists | C.protect themselves | D.look for food |
A.发现 | B.消化 | C.制造 | D.使用 |
A.Bringing in more and more goats is good for the argan trees. |
B.These goats spend 16 hours on the branches of these trees. |
C.Farmers need these goats to help them produce argan oil. |
D.In the future, these goats can’t continue to enjoy the argan fruits. |
A.Tree-climbing goats of Morocco. | B.Argan trees in danger. |
C.The helpful Moroccan goats. | D.The importance of argan trees. |
【小题1】People in Australia_________.
A.keep koalas in their homes |
B.put koalas in the tree |
C.set up places for koalas to live safely |
D.raise baby koalas in their pockets |
A.for six days | B.for six months |
C.for a night | D.all his life |
A.树皮 | B.花朵 | C.树干 | D.树枝 |
A.they have to keep cool under the tree |
B.they eat the fruit on the tree |
C.they stay in the tree all the time |
D.they live in the tree and get food from it |
A.Lovely koalas in Australia. |
B.How people in Australia protect koalas. |
C.Koalas cannot live without a special kind of tree. |
D.The way mother koalas take care of their babies. |
These ants move in large groups. They eat all the animals, and they can eat wood houses. Sometimes even people are killed by them. When the ants come near, people leave their homes. But people are sometimes glad after the ants pass through, because they can see no insects ( 昆虫 ) or snakes .
【小题1】Some ants in America can be very .
A.heavy | B.strong | C.light | D.thin |
A.one kind of ants | B.all kinds of ants | C.small ants | D.big ants |
A.they can eat and kill elephants | B.they can also eat wood houses |
C.they travel in large groups | D.they can even kill people |
A.They hide themselves under the ground. |
B.They have moved to other places before the ants come. |
C.They have been killed and eaten up by the ants. |
D.They have been killed by people. |
A.Ants | B.American Ants | C.A Big Ant | D.A Strong Ant |
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