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An Indian spacecraft's first attempt to ...

    An Indian spacecraft's first attempt to make a soft, controlled landing in the moon's south polar region has ended in painful silence: Shortly before touchdown (降落), the robotic lander - part of the Chandrayaan-2 mission - fell out of contact with mission control(航天地面指挥中心). The Indian Space Research Organization says that the spacecraft stopped communicating with Earth when it was within 1.3 miles of the lunar surface. ''The Vikram descent (下降)was as planned, and normal performance was observed, up to an altitude of 2.1 kilometers, '' said Kailasavadivoo Sivan, ISRO's chairman, in a statement roughly half an hour after signal loss. ''The data is being analyzed.''

A successful landing would have made India just the fourth country to touch down anywhere on the lunar (月球的)surface, and only the third nation to operate a robotic rover (巡视器) there. Nevertheless, the Chandrayaan-2 mission's orbiter(航天器) remains safely in lunar orbit, with a year-long scientific mission ahead of it. Like any voyage to a world beyond Earth, Vikram's flight was a risky endeavor, requiring the lander to slow itself down to a near standstill(停止), scan for surface obstacles (障碍物) by itself, and then take steps to avoid them during touchdown. The majority of attempts to land robots on the moon have ended in failure, either during launch or on the way to the surface.

Following its launch on July 22, Chandrayaan-2 spent the last several weeks inching its way to the moon, ultimately entering lunar orbit on August 20. On September 2, Vikram separated from the mission's orbiter, and the newly freed lander began a series of braking maneuvers (刹车操作)to lower its orbit and ready itself for landing. Had things proceeded without a fault, Vikram and Pragyaan - the small solar-powered rover it carried - would have set down on the moon at a latitude of about 70 degrees South, on a highland between Manzinus C and Simpelius N.

This landing site was ''somewhere new that we haven't seen before, so that makes it another area for ground-truthing remote sensing data,'' Clive Neal, a lunar geologist, said in an interview before the landing attempt, ''It was going to certainly enhance our knowledge of what the moon is like in those areas, so it was going to be another very good place for science and exploration.''

1.What happened to the lunar lander according to paragraph 1?

A.It made a soft landing. B.It got data from the lunar surface.

C.It lost contact with Earth. D.It lowered itself at a wrong altitude.

2.Why was the Vikram's flight a risky endeavor?

A.It demanded higher technique.

B.There were not enough funds to support it.

C.Few Indian scientists agreed with the voyage.

D.No country has succeeded in landing robots on the moon.

3.What can we learn about Vikram from the third paragraph?

A.It entered lunar orbit four weeks after its launch.

B.It landed on the moon at an altitude of about 70 degrees South.

C.It separated from the mission's orbiter before entering the lunar orbit.

D.It lowered its orbit by starting the braking maneuvers to prepare for its landing.

4.What's Clive Neal's attitude towards the landing?

A.Doubtful. B.Positive. C.Neutral. D.Negative.

 

1.C 2.A 3.D 4.B 【解析】 这是一篇新闻报道。文章主要是介绍印度空间研究组织表示,“维克兰”号在距离月球表面2.1公里的地方与地球失去了联系。它会在月球南极附近“软着陆”,专家认为,如果着陆成成功的话,会对月球的研究有所帮助。 1.细节理解题。根据第一段的The Indian Space Research Organization says that the spacecraft stopped communicating with Earth when it was within 1.3 miles of the lunar surface. (印度空间研究组织表示,这艘宇宙飞船在距离月球表面1.3英里的地方与地球失去了联系)可知,月球着陆器与地球失去了联系。C. It lost contact with Earth. (它和地球失去了联系)符合以上说法,故选C项。 2.推理判断题。根据第二段的 Like any voyage to a world beyond Earth, Vikram's flight was a risky endeavor, requiring the lander to slow itself down to a near standstill, scan for surface obstacles by itself, and then take steps to avoid them during touchdown(与任何前往地球以外世界的航行一样,“维克兰”号的飞行是一次冒险的尝试,它需要着陆器将自身减速到接近静止状态,自行扫描表面的障碍物,然后在着陆时采取措施避开它们)可知“维克兰”号的飞行是一次冒险的尝试,故推测它需要更高的技术。A. It demanded higher technique. (它要求更高的技术)符合以上说法,故选A项。 3.细节理解题。根据第三段的On September 2, Vikram separated from the mission's orbiter, and the newly freed lander began a series of braking maneuvers to lower its orbit and ready itself for landing(9月2日,“维克兰”号与任务的轨道飞行器分离,新释放的着陆器开始了一系列的制动操作,以降低轨道高度,为着陆做好准备。可知,“维克兰”通过启动刹车动作来降低轨道,为着陆做准备)。D. It lowered its orbit by starting the braking maneuvers to prepare for its landing. (它通过制动操作来降低轨道为着陆做准备)符合以上说法,故选D项。 4.推理判断题。根据第四段的It was going to certainly enhance our knowledge of what the moon is like in those areas, so it was going to be another very good place for science and exploration.(这肯定会提高我们对于月球在这些区域看起来什么样的知识,所以这将是另一个科学和探索的好地方)可推测,克莱夫.尼尔对着陆的态度是积极的。故选B项。
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