— How long do you think it will be ___ man can land on Mars?— Well, it depends. A. when B. before C. after D. until 相关知识点: 试题来源: 解析 B 该句需要一个表示时间的连词,且表示“在...之前”。选项中只有 "before" 符合语境,表示“在人类能够登陆火星之前还有多久”。因此...
百度试题 结果1 题目2. How long does it take to fly to Mars at present?I前飞往火星需要多长时间? a. Hours. b. Months.L c. Years. 相关知识点: 试题来源: 解析 2.b 反馈 收藏
Mars and Earth are quite different. Compared to Earth, a year on Mars lasts almost twice as long – 686.98 Earth days. This is due to the fact that Mars is significantly farther from the Sun and its orbital period (the time it takes to orbit the Sun) is significantly greater than that...
This is a whole 8 minutes slower than NASA Voyager results from the early 1980s, and slower than previous estimates from another Cassini instrument. The magnetometer results provide the best estimate of the Saturn day to date, because it can see deep inside Saturn. Planets rotate around their ...
How long does it take to get to Mars & what affects the travel time? The time it takes to get from one celestial body to another depends largely on the energy that one is willing to expend. Here "energy" refers to the effort put in by the launch vehicle and the sum of the maneuver...
1 ( ) 2. How long did it take the spacecraft to Mars? A. get B. arrive C. get to D. arrive at 2 ( ) 2. How long did it take the spacecraft to Mars? A. get B. arrive C. get to D. arrive at 3 ( ) 2. How long did it take the spacecraft to Mars? A. g...
1 ( ) 6. How long does it take to fly to Mars at present? A. About the year 2100 B. Very far away C. About several months D. By the year 2100 2) 6. -How long does it take to fly to Mars at present? A. About the year 2100 B. V_(ery)farawayC. About several months...
aHow does he get to school? 他怎么到学校?[translate] aHappy is not much but because of the care because they have less. 因为他们有较少,愉快的不是,但由于关心。[translate] a我的年龄是14 My age is 14[translate] aHow long is he staying? 他多久停留?[translate]...
Flight to Mars: How Long? Along what Path?David Stern
--是的,乘宇宙飞船去火星旅行需要好几个月. 解答 答案:B.How soon多久以后;How far多远; How long多久; How often多久一次.根据答语中it takes months to travel to Mars by spacecraft.可知这里应该表示的是多远.故选B. 点评 本题考查了how引导的疑问词组.解答时注意区分和辨别.练习册系列答案 ...