The US Air Force wants to develop spacebased weapons that could strike targets anywhere in the world within 90 minutes of receiving the order to open fire.

　　These new weapons under development cover a wide range. They include hunter killer satellites(杀手卫星)and orbiting weapons(沿轨道运行的武器系统). And they use lasers, radio waves, or even dense metal tubes, known as “Rods from God”, dropped from space to do the damage.

　　There are many barriers to the setting up of this kind of program, experts say.

　　First is cost. It is estimated that the budget may be US ＄220 billion to US ＄1 trillion. The technical difficulties of developing reliable space weapons are also a problem. And, the move will draw strong criticism from around the world. Experts worry about setting off a space arms race.

　　29.The news report mainly deals with._____.

　　AUS Military Plans

　　BThe Global Arms Race

　　CA Comparison between Two presidents

　　DPresident George W. Bush and the World Peace

　　30.Which of the following statements are mentioned in the passage above?

　　a. President George W. Bush supports space weapon development.

　　b. The US space weapon project is very costly.

　　c. The American spacebased weapons to be developed will be able to target any place on the earth.

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