She said that the earth___around the sun.( ) A. traveled B. travels C. travel答案根据句意:她说地球绕太阳转。可知从句是一个客观真理,时态用一般现在时,主语是单数,用动词第三人称单数形式travels。A一般过去时;B一般现在时;C动词原形。故选:B。
Sunrise Calculator– Find times for sunrise, sunset and more. Day and Night World Map– See which parts of the Earth are currently illuminated by the Sun. Calendar Tools Calendar for 2025– Calendar with holidays for this year Calendar Generator– Create a calendar for any year ...
In the first book, the stability of the Solar system by the example of the evolution of the Mars orbit for 100 million years is shown. The optimal motion of the spacecraft to the vicinity of the Sun is considered. The results of an exact solution to the problem of the interaction of ...
Near-earth objects (NEOs) reside in the vicinity of Earth near 1.0 AU (the mean distance between Earth and the Sun). Any object, such as an asteroid or comet, orbiting the Sun with a perihelion, q < 1.3 AU, well inside the orbit of Mars, is defined as an NEO. Aphelia, Q, of ...
The Sun-Earth connect 3: lessons from the periodicities of deep time influencing sea-level change and marine extinctions in the geological record. SpringerPlus 4, 285 [4] Bambach, R., 2006. Phanerozoic biodiversity mass extinctions. Ann. Rev. Earth Planet. Sci. 34, 127-155 [5] Boulila...
【题目】Yesterday the teacher told us the earth ___ round the sun in 365 days. ( ) A.goesB.wentC.is goingD.will go 试题答案 【答案】A 【解析】 句意:昨天老师告诉我们地球365天围着太阳...。这是宾语从句,当从句是客观真理时,从句时态用一般现在时。只有A选项是一般现在时,故答案为: A. 练...
18.Of all the stars in the universe,the sun isthe nearest(near) to the earth. 试题答案 在线课程 分析翻译:宇宙中所有的恒星,太阳是离地球最近的. 解答答案:the nearest.句中有Of all the stars(所有的恒星),因此该用最高级,near的最高级是nearest,最高级前应加定冠词the.故答案为the nearest. ...
The Earth was once believed to be the centre of the universe. Due to the apparent movements of the Sun and planets in relation to their viewpoint, ancient scientists insisted that the Earth remained static, whilst other celestial bodies travelled in circular orbits around it. Eventually, the vi...
Low Earth orbit (LEO), region of space where satellites orbit closest to Earth’s surface. There is no official definition of this region, but it is usually considered to be between 160 and 1,600 km (about 100 and 1,000 miles) above Earth. Satellites do
1. We're the third rock from the sun (Image credit: Getty Images) Our home, Earth, is the third planet from the sun, the fifth largest planet in our solar system, with a radius of 3,959 miles, and the only world known to support an atmosphere with free oxygen, oceans of liquid ...