在地球上使用 "on the earth" 的说法是因为地球是我们居住的地方，我们可以说我们在地球上，因此使用"on the earth"是符合习惯的。然而，火星是一个行星，我们不能说我们在火星上，因此使用"on Mars"是不合适的。在这种情况下，我们应该使用"on the surface of Mars"或者"on the planet Mars"来表...
13. 本来应该找代词this surface feature的,但这个词太抽象,所以没法定位,放弃;而且Mar's surface也不好,只能用动词变来的名词speculation做过渡点,同义词是原文的think,所以正确答案非B即C,从逻辑上讲,应该先有导致speculation,再有speculation是什么,所以正确答案是B不是C 14. Plate motion选项没有原文与之对应,...
It is no accident that Maxwell Mons on Venus and the Hawaiian shield volcanoes on Earth rise to about the same height (about 10 kilometers) above their respective bases-Earth and Venus have similar surface gravity. 显然是用具体例子来支持前句上位句： the volcano’s eventual height depends on ...
根据第一段“The surface of Mars is etched(蚀刻) with ancient river valleys and lake basins. Some researchers think that liquid water once flowed on the Red Planet. (火星表面蚀刻着古老的河谷和湖盆。一些研究人员认为液态水曾经在这颗红色星球上流动过。)”可知,火星的地质特征让研究人员认为火星上曾经...
The Mariner spacecraft found that the surface of Mars, as well as that of its two moons, is pitted with impact craters formed by meteoroids falling in from space. As on our Moon, the smaller craters are often filled with surface matter-mostly dust-confirming that Mars is a dry desert ...
Just as a family picture shows people of several generations, images of Mars often display morphologies that are billions of years old, along with much more recent features.On the following pages, we will see many astonishing images of the Martian surface. We will investigate the nature of ...
根据第一段的“The surface of Mars is etched with ancient river valleys and lake basins. Some researchers think that liquid water once flowed on the Red Planet. (火星表面蚀刻着古老的河谷和湖泊盆地。一些研究人员认为液态水曾经在这颗红色星球上流动)”可知,火星表面有着古老的河谷和湖泊盆地,这些地质...
As on the Moon, the extent of large impact cratering (i.e. craters too big to have been filled in by erosion since they were formed) serves as an age indicator for the Martian surface. Age estimates ranging from four billion years for Mars’s southern highlands to a few hundred million...
【1】The surface of Mars shows a wide range of geologic features, including huge volcanoes-the largest known in the solar system-and extensive impact cratering. Three very large volcanoes are found on the Tharsis bulge, an enormous geologic area near Mars’s equator. Northwest of Tharsis is th...
The gravity on the surface of Mars is about ___ as strong as it is on the earth. 相关知识点: 试题来源: 解析 A: 正确 one third B: 错误 two thirdsC: 错误 a quarterD: 错误 a half答案:A解析:火星表面的引力约为地球表面的三分之一。故答案为A项,A项意为“三分之一”,B项意为“三分...