解析 答案:4.A核心短语/词汇:through(通过)句子译文:在不同的季节,通过望远镜观察火星,颜色是怎样的?解析:本题考查常识。火星被称为红色的行星,这是因为它表面布满了氧化物,因而呈现出铁锈红色。 而gray“灰色”,different“不同的”,结合题意,排除B,C,D。故选A。
1( ) 4. How does Mars's colour look in different seasons through a telescope? A. Red. B. Gray. C. Gray-green. D. Different.( ) 5. We can tell from the passage that ___ A. someday we may know if there is life on Mars B. men should not take water when they go to Mars...
Conjunctions: These events happen when the moon appears close in its orbit to another celestial object, such as Venus, Mars, Jupiter or Saturn. High-resolution lunar photography: This technique uses a teleconverter or a telescope to capture a collage of images blended into a single image. Celest...
Using mathematical models, the group narrowed the field to the Baptistina cluster, a group of asteroids created by a large impact beyond the orbit of Mars [source: Sky & Telescope]. According to the Alvarez theory, the extinction of the dinosaurs was catastrophic and extrinsic, meaning it ...
The first space stations were built to study the long-term effects of weightlessness on the human body. After all, if astronauts will ever venture to Mars or other planets, then we must know how prolonged microgravity on the order of months to years will affect their health. Space stations ...
Then, 11 years after NASA dashed his astronaut dreams a second time, he won the MoonDAO draw and started preparing to gobeyond the Kármán line. Related: The Kármán Line: Where does space begin? Excitement, disbelief and doubt As his flight with Blue Origin approached, Jahangir was filled...
telescope标注音标并让学生猜测词意。StepPresentation第二步呈现时间13分钟OKyouhaveknownmuchaboutMarsdoyouknowpeoplecanlive教师放录音1a并设置听力任务。HowfarfromMarsWhatdoeslooklikeCanpeopleliveHowlongdoestakefromspaceship用幻灯片把问题在屏幕上打出。学生听的过程中老师将对话中几个关键的句子、短语写在黑板上。
The main engines provide the remainder of the thrust (29 percent) to lift the shuttle off the pad and into orbit. The engines burn liquid hydrogen and liquid oxygen, which are stored in the external fuel tank (ET), at a ratio of 6:1. They draw liquid hydrogen and oxygen from the ET...
He’d take his telescope out and every night he’d scan through over a hundred galaxies with his eyes, jumping from one galaxy to the next, to the next to the next. He’d memorized what all of these galaxies looked like. As he jumped from them, he’d be...
A typical day for an astrobiologist might involve analyzing space-telescope images or data from a satellite orbiting Mars. It might involve developing computer models or suiting up in scuba gear. It might be spent writing grants, lots of grants, to fund the work. Or it might be spent in th...