A. is B. was C. has been D. will be 相关知识点: 试题来源: 解析 B。本题考查一般过去时。这里表达火星上发现水这个动作是在过去发生的,是一个过去的事实,所以用一般过去时。A选项是一般现在时;C选项是现在完成时;D选项是一般将来时,均不符合题意。反馈 收藏 ...
First Discovery of Water on MarsPublished on July 31, 2018 by Sarah Taken by NASA’s Phoenix Mars Lander, this combines more than 400 images of the Red Planet’s northernmost region. Exploring the universe is a step toward understanding the vast space surrounding Earth. One of our neighboring...
Chinese researchers have revealed for the first time evidence of liquid water on Mars formed from frost or snowfall, based on data collected from the country's Mars rover Zhurong. The discovery is of great significance for understanding the evolution of Mars’ climate and the search for habitable...
There is water on Mars. Water, and several other elements that would be important for sustaining life on the red planet. The discovery comes from NASA's rover Curiosity, as part of its mission to explore Mars. "We now know there should be abundant, easily accessible water on Mars," Lauri...
Since the discovery of gullies on Mars in 2000, NASA has endeavored to re-image areas known to have them. Now for the first time, using before and after images taken of the same region on Mars, a dune gully flow is shown to have happened very recently. On September 20, 2005, NASA ...
The discovery, if confirmed, will mark a turning point in our exploration of the Red Planet, with future missions to Mars being directed to the locations of seepage. 美国国家航空和宇宙航行局的科学家们相信,目前在火星表面有水。 正围绕着这颗红色的行星运转的火星球面勘测仪所拍摄的照片,包含有火星...
NASA's Mars Reconnaissance Orbiter has confirmed that mysterious lines on the surface of the planet are evidence of liquid water. CNET's Eric Mack spoke to the scientist behind the groundbreaking discovery.
Hidden water discovered on Mars. An orbiter from the Europe Space Agency made the discovery in Mars' Grand Canyon. This is a vast area that stretches more than 3,800 kilometres across the dusty Martian landscape. Scientists said the significant amount of water was hiding just ...
Mars has water trapped in the polar ice caps. More water may lie just beneath the surface. A new study suggests that water also flows on the surface.
The underlined part is a(n)_. A. appositive clause B. adverbial clause C. attributive clause D. predicative clause 相关知识点: 试题来源: 解析 A。“that there is water on Mars”解释说明“the discovery”,是同位语从句。反馈 收藏