such big black holes could have formed, but they say there are two possibilities. Either lots of gas...史上最大“超级黑洞”。词数 332 建议阅读时间 5分钟ASTRONOMERS have located the two biggest black holes ever found ……

holes on the wall or ground.6. It is the king of forest. All animals are afraid of it. It eats...睁大眼睛，根据提示，猜猜6张图片都是什么？1. It is very big. It has a long nose. It uses its nose to drink water. Its ……

Republic 捷克水坝工程受阻，河狸“连夜完工”捷克水坝工程受阻，河狸“连夜完工”Beavers are small animals but they can do big things... but they can do big things! Some beavers made a dam (水坝) on a river in the Czech Republic (捷克共和国)!Seven ……

to the US from Asia. They are big and strong. They can jump off the ground. They can also grow as long...勤劳松土的蚯蚓这次带来了大麻烦。词数 180 建议阅读时间 4分钟 Earthworms (蚯蚓) are friends of farmers. They can make holes ……

to the US from Asia. They are big and strong. They can jump off the ground (地面). They can also grow... holes (洞) in the earth, so rain and air can get through. That helps plants grow. But now in the United ……

burrowsOur big “house” is underground. We use our sharp claws (爪子) to build it. It has a few holes.... It absorbs heat (吸收热量) and keeps me warm.A big familyI come from the deserts (沙漠) of Africa. It is hot ……

A big win for water (P3)A big win for water (P3)Choose the answer:Choose the answer:1. What... holes in leftover bones.D. The porous holes in leftover bones.2. What was Jin’s purpose when she ……

大猫怎么从小洞口爬出来呢？Mr White has two cats. One is big and the other is small. He likes them very much. One day his friend Mr Green comes to see him. He finds there are two holes1 in the door, a big ……

collider (对撞机) under the ground. Inside the collider particles (粒子) run almost at the speed of light. Scientists think the universe began with the "big bang (爆炸)". The experiment will try to bring back ……

of a 15-kilogram ironwood (铁木) ball. There are two holes at both ends of the ground that are used... hold of a 15-kilogram ironwood (铁木) ball. There are two holes at both ends of the ground that are used ……

鸵鸟枕让你瞌睡无忧。A SPANISH company has made an “ostrich (鸵鸟) pillow” that can help you take a nap anywhere comfortably. The big hat can keep out noises when you are napping in it. There are several holes ……

that as well as being connected, white holes are similar events to the big bang. And just like...黑洞 vs 白洞：谁才是最奇特的存在？Black holes are among the most exciting mysteries in the universe. They have ……

大家都知道黑洞,那白洞你了解多少呢？Don’t let the name fool you: Black holes are anything but empty space. Since... the outside. So what exactly are black holes? They are made when stars can’t make enough energy. When ……

. Big black holes are combinations of several small black holes. D. A supermassive black hole has... over the American Midwestern plains.C. It was discovered in a big, star-rich galaxy.D ……

or climbing, can be a big adventure (历险). Look at a hole in the ground. What’s inside...探洞：黑暗世界的历险探洞：黑暗世界的历险Caving, like camping or climbing, can be a big adventure (历险). Look at a hole ……