What CBS anchor reported the assassination of President Kennedy in 1963, the first moon landing in 1969, and the election of Ronald Reagan in 1980?
A、Dwight D. Eisenhower
B、Edward R. Murrow
C、Walter Cronkite
D、Charles Foster Kane
A、Dwight D. Eisenhower
B、Edward R. Murrow
C、Walter Cronkite
D、Charles Foster Kane
第2题
The Wrights offered Flyer No. 3 to the United States Government. The Government was not interested. They seemed to think the Wrights wanted money in order to build an airplane, They did not understand the Wrights had already done this, and flown it as well. Experts were still saying that mechanical flight was impossible. At the end of 1905, the two brothers took their plane to pieces. The parts were put into a huge wooden case. It seemed nobody was interested.
(20)
A.They were able to fly it in the air.
B.They were able to stay up in the air for half an hour and more in the machine.
C.They were able to carry travelers.
D.They were able to fly in around Dayton.
第3题
The Wrights offered Flyer No. 3 to the United States Government. The Government was not interested. They seemed to think the Wrights wanted money in order to build an airplane. They did not understand the Wrights had already done this, and flown it as well. Experts were still saying that mechanical flight was impossible. At the end of 1905, the two brothers took their plane to pieces. The parts were put into a huge wooden case. It seemed nobody was interested.
(30)
A.They were able to fly it in the air.
B.They were able to stay up in the air for half an hour and more in the machine.
C.They were able to carry travelers.
D.They were 'able to fly in mound Dayton.
第4题
The Wrights offered Flyer No. 3 to the United States Government. The Government was not interested. They seemed to think the Wrights wanted money in order to build an airplane, They did not understand the Wrights had already done this, and flown it as well. Experts were still saying that mechanical flight was impossible. At the end of 1905, the two brothers took their plane to pieces. The parts were put into a huge wooden case. It seemed nobody was interested.
(26)
A.They were able to fly it in the air.
B.They were able to stay up in the air for half an hour and more in the machine.
C.They were able to carry travelers.
D.They were able to fly in around Dayton.
第5题
A.What looked like the satellite' s other side
B.what the satellite' s other side looks like
C.what did the satellite' s other side look like
D.what the satellite' s other side looks like
第6题
第7题
The Columbia accident has revived the debate on whether the rewards of human space exploration are worth the risks.
No. I was a teacher when men first landed on the moon in 1969, and I remember how it moved my students and this country.___________(46) And we haven't ventured outward since then. That's 30 years too long! America's human space-flight program is adrift, with no clear vision or goals beyond the completion of the International Space Station.
I want NASA to establish a phased series of goals over the next 20 years, including human visits to asteroids that cross the Earth's orbit, establishing a research and living facility for humans on the moon, and human expeditions to the surface of Mars and its moons.___________(47)
An astronaut is today's Christopher Columbus, who sailed into the unknown and discovered the Americas. The knowledge we gain from having actual people exploring can never be replaced by robots.___________ (48) Robots are useful, but humans can do things that robots can't.
The real obstacle we face in overcoming the drift in the nation's human space-flight program is not technological and it's not financial.___________ (49)The lesson from the Columbia accident is not that humans don't belong in space.___________ (50)
A.Instead, we should honor the memory of the lost astronauts by pushing our exploration of space future.
B.Astronauts are key to this expanded exploration.
C.It's the lack of commitment to get started.
D.Until then, we should stop risking people's lives by sending them into space.
E.It is now more than 30 year since the last American left the surface of the moon and returned to Earth.
F.Our ability to send humans into space and have them return gives us amazing information about ourselves and our universe.
第 46 题 请选择(46)处的最佳答案.
为了保护您的账号安全,请在“上学吧”公众号进行验证,点击“官网服务”-“账号验证”后输入验证码“”完成验证,验证成功后方可继续查看答案!