They were different from all life forms 小题7:ever existed in the past because they produced young from within their bodies. Finally, some small clever animals with hands and legs ___小题8:___(appear) and spread all over the earth. Thus they, in their turn, have become 小题9:most ...
,答案在文章的第四段:If this continues,the planet's ring system will no longer exist in 100 million to 300million years' time。(如果星环物质持续受重力影响掉入土星,土星环将在一亿到三亿年之后不复存在。),即图形的星环系统彻底消失的最晚时间是三亿年之后,即选项D。故本题答案是:D。63.【答案】A...
3 Pluto, the outermost planet of the solar system, ___photographically in March 1930. A. discovered B. was discoveredC. by discovery D. when discovered 4Pluto, the outermost planet of the solar system, ___photographically in March 1930. A) discovered B) was discovered C) by discovery...
Iois the most volcanically active body in our solar system. As Io orbits Jupiter, the planet's immensegravitycauses "tides" in Io's solid surface that rise 300 feet (100 meters) high and generate enough heat to spur on volcanism. Those volcanoes release more than one ton of material every...
Jupiter s the solar systems largest planetC. Europa has a layer of ice that may have liquid below it.D. The creatures would be too small to see without a microscope.65. What can we infer from the passage?A. Scientists are most interested in Europa because of its sizeB. Scientists will...
阅读理解 Jupiter is the largest planet in our solar system.It is also one of the most interesting.It was named after Jupiter, the most important of the Roman gods, and nicknamed the“King of Planets. It is the fifth planet from the sun and the fourth
When the fragments (碎片) landed in the southern part of the giant planet, the explosions(爆炸) were watched by scientists here on the earth. But what if our own planet was hit by a comet? The year is 2094. It has been announced that a comet is heading towards the Earth. Most of ...
By learning more about Jupiter, we can also learn more about the evolution of every other planet in the solar system. Jupiter has more mass than all of the other planets combined, and its immense gravity helped shape the orbits of the other objects in the solar system as they move around...
But perhaps the most impressive feature about Jupiter is its sheer size. In terms of mass, volume, and surface area, Jupiter is the biggest planet in our solar system by a wide margin. But just what makes Jupiter so massive, and what else do we know about it?
Which planet is the most beautiful in our solar system? Many people may answer “Saturn(土星).” Saturn is a funny-looking planet. It has beautiful rings. Of the planets in the solar system. Saturn’s rings are the biggest and brightest. According to scientists, however, these rings will...