Ants are a special kind of animals in the world. What do you know about them? Do you know where they live? How do they work? How many kinds of ants are there in the world? Let's have a close look at them.Some ants make their houses under a stone or under the ground. If the...
Passage 3小小的牙齿,大大的学问What are teeth used for? "That's easy," you say. “Teeth are for eating." You're right. For humans, that's the purpose of teeth. But, for ani-mals, teeth are good for more than just eating.They might be used for fighting, communicating, or even bui...
Giraffe tried to eat ants just like an anteater. 长颈鹿试图像食蚁兽一样吃蚂蚁。 But ants bit his tongue. 但蚂蚁咬了他的舌头。 Giraffe tried eating honey just like a bear. 长颈鹿试着像熊一样吃蜂蜜。 But bees stung his nose. 但蜜蜂...
And it always makes its way back to the host plant to feed, guided by the ants, the ant escort service, so to speak. Now, why would the ants go through all this trouble? What's their benefit? Mary? Student: It's probably related to food? Professor: Uh-huh? You are onto ...
Humans control the planet because they are the only animals that can cooperate both flexibly and in very large numbers. Now, there are other animals -- like the social insects, the bees, the ants -- that can coopera...
ants (蚂蚁) moving in the yard. But now you never do it again. People sure change in many sides when they grow up.First, the appearance and personalities may change. For example, some of our friends used to be thin and short, but now they are big and strong,just like a 4. g ua...
(保持句意不变)They looked for food everywhere, but they26. Spring makes our city look very nice. (对画线部分提问)makes your city look very nice?27. Look, the children are enjoying themselves in the snow. (保持句意不变)Look, the children are in the snow.28. I saw the ants in the...
These cells are cultured in liquid medium for two days, then moved to another medium which contains nutrients and two different hormones (激素). By adjusting the hormone levels, the researchers can tune the physical and mechanical qualities of the ce...
Andrew Herrmann
She piles up the sand.It makes a little hill.She is making a good piace for her eggs.It is anest.When baby ants come out of the eggs,they are called grubs.They look like worms,Thequeen feeds them food and water.But when a grub is a woek or two old.it stops eating,It noIo...