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单项选择题

The author's attitude towards intelligent seem to be that_____.

A．opposition
B．approval
C．suspicion
D．indifference
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单项选择题When the author says that it' s not crazy to think about the impact of this on evolution, he means_____.

A．the progress in biography is so great that people feel astonished
B．the progress in cryogenics is so great that people feel astonished
C．the progress in information technology has great influence on human
D．the progress in information technology is beneficial to human

单项选择题What are the challenges of space exploration

A．The challenge was developing rockets powerful enough and reliable enough to boost a satellite into orbit.
B．The challenge was building the satellites themselves.
C．Engineers also had to build tracking stations to maintain radio communications with these artificial "moons" as they circled the planet.
D．The development of rockets and satellites.

单项选择题What have given mankind a new viewpoint on the earth and its neighbors in space

A．Those explorations.
B．The advance of new technologies.
C．Spacecraft studies.
D．Scientific discoveries.

单项选择题In the passage, the author wants to tell us_____.

A．That people dreamed of leaving their home planet and exploring other worlds became reality.
B．After the Apollo program, the emphasis in piloted missions shifted to short-duration spaceflight.
C．Space exploration is a great challenge to human beings and will be achieved through generation's work.
D．Today efforts focus on keeping people healthy during space missions and in increasing the cost of sending satellites into orbit.

单项选择题According to the passage, which of the following statement is NOT true

A．While the Global System for Mobile Communications (GSM) radio network stretches around the globe, the amount of data which can be transmitted over it is only a small bit.
B．Wireless Local Area Networks (WLANs) has the advantage of broadband, but their local transmitting area is limited.
C．New wireless transmission techniques such as Bluetooth can send data without cables within about ten meters.
D．Until now, any user can move freely between old connection coverage areas and the new network.