D. it is sold on the Internet.

　　28.Which number should you call if you lose something on the Metro?

　　A. 202-962-1195

　　B.202-962-1100

　　C.202-637-7000

　　D.202-637-8000

　　C

　　United States President George W. Bush is expected to issue a directive in the next few weeks. It will give the US Air Force a green light for the development of space weapons, US media reported last week.

　　This would potentially set off a new global arms race, some experts have warned.

　　To keep that from happening, last Wednesday the White House explained that it was not considering putting weapons in space. It said it was making a shift in US space policy to allow for protection of satellites.

　　But some defense analysts and arms control advocates argue that the policy will pave the way for the US to put both defensive and offensive weapons in space.

　　“No one should be fooled,” said Theresa Hitches, an American weapons expert.

　　The US is now restricted by a 1996 directive signed by President Bill Clinton. Plans for space weapons were vetoed by the Clinton cabinet. The directive emphasized the peaceful use of space, in agreement with almost undivided global opinion.

　　The US military has placed importance on space and has sent up numerous satellites for troop communications and to provide intelligence and data to guide bombs to their targets.

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