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Missions to Mars
Tianwen l enters the orbit of Mars for an ambitious mission.XINHUA
After traveling more than seven months in space, Tianwen l is one step closer to Mars!Tianwen l,China's first Mars probe, successfully entered Mars orbit in February, according to the China National Space Administration(CNSA).It will stay in orbit for about three months before landing on the red planet.
A small step on the red planet will be a big step for human beings. Humans have launched 46 Mars exploration missions since October 1960, but only 19 of them have been successful,according to China Daily.It's China's first spacecraft to Mars, and the missions are rather ambitious. Tianwen l aims to achieve“orbiting,landing,and roving"all in one journey,which will make the country the world's first to accomplish all three goals with one probe, mission scientists said.
Among the three tasks, touchdown on the red planet is the most difficult. The result mainly depends on the“breathtaking seven minutes,”which will deploy multiple cutting-edge technologies and accurate timing of each action, including the burning of engines and opening of parachutes to ensure a safe landing, according to the Global Times.
The previous success of Chang'e 5 has accumulated experience in this regard which“boosts our confidence”,Wang Ya'nan,chief editor of Beijing-based Aerospace Knowledge magazine, told the Global Times.
February was Mars month. NASA's Perseverance Rover landed on Mars on Feb 19, and China's Tianwen l and United Arab Emirates’(UAE)Hope have arrived within orbit of the red planet. Although they started their Mars journeys at almost the same time, their missions vary. The Mars mission Hope Probe successfully entered the orbit of Mars on Feb 9, the Mohammed Bin Rashid Space Centre (MBRSC) announced. Perseverance landed in a deep crater near the planet's equator called Jezero and will collect samples of rock and soil for further research, according to the BBC. Tianwen l's ultimate goal is to land a rover on Mars in May or June, and it will conduct scientific investigations on Mars' soil, geological structure,environment,atmosphere and water, according to China Daily.
“When we step into the far planets of the solar system, the magnitude of the resources and timeline required will take a global commitment,”US Congressman
Frank Lucas said, highlighting the importance of international cooperation in space.
1.What can we learn about Tianwen l?
A.It's the world's first probe to enter the orbit around Mars.
B. It will spend 10 months preparing for its landing.
C.It is expected to land on Mars in May or June.
D.It's one of the 46 successful Mars exploration missions.
2.What's the biggest challenge facing Tianwen1?
A.Lack of advanced technologies.
B.Achieving a safe landing.
C.Completing tasks quickly.
D.Insufficient landing experience.
3.What can be inferred from Frank Lucas'words?
A.There are risks in exploring other planets.
B.Space exploration calls for global cooperation.
C.Tianwenl will reach other planets besides Mars.
D.Exploring space takes considerable time and resources.
1.C【解析】根据倒数第二段中Tianwenl's ultimate goal is to land a rover on Mars in May or June.可知天问一号将于今年五月到六月择机着陆火星，故选C。
2.B 【解析】根据第三段Among the three tasks, touchdown on the red planet is the most difficult可知，最难的是着陆，即任务中最具挑战性的部分是安全着陆，故选B。
3.B 【解析】根据美国国会议员弗兰克·卢卡斯所说的“当我们进入太阳系中遥远行星时，所需的大量资源与时间需要全球共同努力。”可知太空探索需要全球 合作，故选B。
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