WEST BERLIN - THEY WAIT: West Berliners, under the protection of Allied troops go about their daily tasks well aware that their divided city has been pounced upon by Khrushchev as his frail reason for resuming Atom-bomb tests. Highlights on life in Berlin show a British lad escorted to school by tanks after threats from East Berlin police; a bride is married in the East while her mother watches from the West.