Human Space Exploration
While scientists are searching the cause of the Columbia disaster, NASA is moving ahead with plans to develop a new craft that would replace shuttleson space station missions by 2012 and respond quickly to space station emergencies.
The space agency released the first set of mission needs and requirements several days ago for me orbital space plane, which would be designed to transport a crew of four to and from the International Space Station.
Although it includes few specifics,the plan states the orbiterwill be safer cheaper and require less preparation time than the shuttle. It would be able to transport four crew members by 2012--though it would be available for rescue missions by 2010.NASA says the craft should be able to transport injured or ill space station crew members to definitivemedical care within 24 hours.
The release of the requirements showed NASA remains focused on the long-term priorities of space exploration,even as questions exist concerning the loss of Columbia and its seven member crew on February l, 2003.
Expels at Marshall Space Flight Center in Huntsville, Alabama, have been working for years on a successor to the shuttle. The project,known as the Space Launch Initiative, was divided last year into two parts----one focusing on a future launch vehicle, the other on a space station orbiter. The orbiter is expected to be ready sooner.
The programs managers say NASA officials have told them not to alter Space Launch Initiative in light of the Columbia disaster.
U.S.President George W. Bush asked Congress for about US$1 billion for Space Launch Initiative in 2004, funds that would be almost equally split between the Orbital Space Plane and Next Generation Launch Technology.
41 NASA plans to design the new space craft to ________
A control the International Space Station
B carry astronauts to the International Space Station
C transport equipment to the International Space Station
D train astronauts in space flights
42 Besides its main mission, the orbiter would also be used as ________
A a medical research center
B a space station
C a space ambulance
D a passenger plane
43 The design of the orbiter indicates ________
A NASAs determination to continue space exploration
B NASAs disadvantage in space technology
C the great pressure from Congress on NASA
D a heavy defeat for NASA
44 When did NASA start working on a successor to the shuttle?
A One year before the Columbia disaster
B One year after the Columbia disaster
C Immediately after the Columbia disaster
D Years before the Columbia disaster
45 According to the passage, the 1 billion funds, if granted, would ________
A be used to rebuild the International Space Station
B be awarded to the scientists working at NASA
C be shared by the two projects under the Space Launch Initiative
D be spent on the investigation of the Columbia disaster
参考答案:B C A D C
5大雅思听力答案书写的注意事项
雅思听力分类词汇:人物描述
雅思听力场景词汇:常见英文标识
3个月零基础冲刺雅思听力6分
雅思听力高分原则:尽快进入状态
雅思听力场景真题词汇:旅游度假
英美影视剧练习雅思听力的方法
雅思听力高频词汇:全球地名
雅思听力分类词汇大集合
雅思听力成绩提高四步法
雅思听力背景材料:流星与流星雨
雅思听力解题技巧:多项选择题
雅思听力经典考点:替换
雅思听力备考技巧:速记符号的选择
雅思听力考试的八大注意事项
雅思听力必备词汇:时间表达
雅思听力过程中的注意事项
雅思听力分类词汇:动物
雅思听力单选题题型特点总结
雅思听力练习中的7个细节点
雅思听力分类词汇:饮食词汇
雅思听力细节类考题答题技巧
如何累积雅思听力词汇?
雅思听力练习的三大原则
雅思听力各部分的答题策略
雅思听力背景材料:英国的经济
雅思听力题做题的三大步骤
雅思听力场景词汇:学术教育
23条攻克雅思听力的绝妙技巧
八类雅思听力常见信号词
| 不限 |
| 英语教案 |
| 英语课件 |
| 英语试题 |
| 不限 |
| 不限 |
| 上册 |
| 下册 |
| 不限 |