加斯加岛)5. What is hardest mineral (矿物) on Earth?a. Goldb. Diamond (钻石)c. Copper (铜)Key:c, c, c, a, b...地球日April 22 is Earth Day. Earth Day is 40 years old this year. The first Earth Day was on April 22 ……

一颗硕大的小行星刚刚与地球擦肩而过。On the first day of September, a dangerous traveler came close to Earth.It was a large and heavy asteroid (小行星) named Florence. Humans (人类) first learned about near-Earth asteroids ……

go to space in a spaceship, you can see a beautiful blue planet – it is our home – the Earth. However...世界地球日，我们动起来！全版词数 527 建议阅读时间 12分钟 课件及教案见网站 测试见7版A day to celebrate the Earth — World Earth Day ……

as it ever was.Indeed, this huge rock in space is like Earth’s key, both to our past and our future... depicted humankind’s first visit to our lunar neighbor in his novel From the Earth to the Moon ……

that needs our attention. Only 3 percent of water on the Earth is fresh enough to drink, the other...让每一天都是“地球日”全版词数 499 建议阅读时间 14分钟EARTH Day is coming on April 22. It is a day to remind people ……

key: ……

left the city.5. The ______ is our home. We should protect it.Key:Across: 1. scared 4. destroyedDown: 2. experience 3. happened 5. earth ……

Keeping our Earth safe (P6)Keeping our Earth safe (P6)Answer the questions:Answer the questions:1... a movie.A. To make a movie.B. To break up the asteroid.B. To break up the asteroid.C. To avoid Earth ……

a dog, we produce increased levels of an immune antibody called IgA, a key player in our immune..., our immune system doesn’t know much, so exposure to pets can be a relatively safe way to expand ……

here on the earth first. We need to be just, fair, our brother's keeper, and have respect...I CAN just hear the sales pitch:"The earth getting too crowded? Your summer home flooded because ……

we do to keep our bodies safe? What can we do to keep our bodies safe? Be careful about... author’s nightmares. War of the Worlds (《世界大战》):  Martians take over Earth. Can humans ……

do to keep our bodies safe? Be careful about bad guys behind the screen.Protect yourself学会保护自己How do you deal with strangers properly?What can we do to keep our bodies safe? Be careful about ……

.5 C this century.“Destination Earth is a key initiative for Europe’s green transitions... this century.“Destination Earth is a key initiative for Europe’s green transitions,&rdquo ……

cannot stop the coming of an earthquake. But we can try our best to keep ourselves safe. What should we...地震来了，怎么自救？The surface (表面) of the Earth is like a huge2 jigsaw puzzle (拼图). There are many big ……

give off a lot of radiation (辐射). This can give people cancer (癌症) and even change our DNA. ... of radiation (辐射). This can give people cancer (癌症) and even change our DNA. When the contaminated water ……