Do you know the temperature 3,000 kilometers under the Earth'ssurface(表面)?US scientists recently found it to be as hot as 3,700°C. If we go deeper, to the center of the Earth, the temperature may ……

for new sources of energy. One source is heat from the Earth. We know that the center of the Earth is very hot. We cannot reach the center of the Earth, but in some places the heat from the Earth’s center ……

are digging deep to study the center of Earth!  While astronauts are flying high to study space, scientists are digging deep to study the center of Earth!  Earlier in May, China ……

ever! It was a really _______ day!”4. high in volume (音量) 5. the opposite of “clean”6. color at the center of an egg7. temperature between hot and cold8. doing things which are not possible, like Harry ……

hot “ice” really shocked me! How could an ice ball be cold on Earth but hot in space... Qihe, 14, Zhengzhou    The hot “ice” really shocked me! How could an ……

cream from it for free!This shopping center made the truck for its customers (顾客). “We work really...世界最小冰淇淋车亮相。It’s nice to have an ice cream on hot sunny days. We sometimes buy ice cream at an “ice ……

heliocentrism puts the sun at the “center” of the universe. Geo means earth or ground in Greek, so geocentrism puts the Earth at the “center”. ……

why volcanoes erupt? There is hot molten (融化的) rock in Earth’s center. It is called magma (岩浆...的) rock in Earth’s center. It is called magma (岩浆). When the Earth moves, magma also moves ……

and Yutu are really there! And they bear the Chinese national flags! On Dec 2, the Chang’e-3 lunar probe (月球探测器) took off from the Xichang Satellite Launch Center in Sichuan province. After days ……

! The picture came out on May 21. Scientists call the ball a planetary nebula (行星状星云).At the center... are dying. The gas (气体) around them is very hot, up to about 14,700 C, according to the BBC Sky at Night ……

! The picture came out on May 21. Scientists call the ball a planetary nebula (行星状星云).At the center... are dying. The gas (气体) around them is very hot, up to about 14,700 C, according to the BBC Sky at Night ……

(文明), Earth will still be the center of humanity.              ... civilization (文明), Earth will still be the center of humanity.             ……

The rocks on the moon tell us it is about 4.6 billion years old, or about the same age as the Earth.The moon is about one-fourth the size of the Earth. If the Earth is an apple, the moon is the size ……

billion yearsDistance from galactic center: 26,000 light yearsDistance from Earth: around... know for sure what the sun really looks like?On Sept 2, China’s Fengyun 3E satellite (卫星) took ……

A: Joe is really in hot water now. His girlfriend just found out he's seeing another girl.B: Ohh, that's not good.in hot water: 处境困难 ……