D．directed

　　26．A.attitude

　　B．altitude

　　C．latitude

　　D．gratitude

　　27．A.organizations

　　B．government

　　C．country

　　D．missions

　　28．A.our

　　B．their

　　C．his

　　D．her

　　29．A.chief

　　B．belief

　　C．relief

　　D．brief

　　30．A.made

　　B．donated

　　C．gave

　　D．collected

　　Ⅲ.阅读理解

　　Nuclear radiation from power plant leaks and bomb tests resulted in millions of fewer baby girls born worldwide, according to a new study.

　　Scientists noted these types of atmospheric blasts rather than on­the­ground incidents like Chernobyl(切尔诺贝利), effected birth gender across the globe.

　　Scientists at Helmholtz Zentrum München, Germany, analysed population data from 1975 to 2007 for the U．S. and 39 European countries.

　　There was an increase in the number of baby boys relative to girls in all of the countries from 1964 to 1975. This was the case in many eastern European countries for several years after 1986.

　　Scientists are putting the first spike down to the atomic bomb tests of the 1960s and 1970s where radioactive atoms were blasted into the atmosphere. Air currents caught these atoms and then distributed them around the world.

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