To get a sense of how women have progressed in science take a quick tour of the physics department at the University ofCalifornia,Berkeley.This is a storied place the 36 of some of the most important discoveries in modern science-starting withErnest Lawrence' s invention of the cvclotron(回旋加速器)in 1931.A、 generation ago female faces were 37 and,even today,visitors walking through the first floor of LeConte Hall will See a full corridor of exhibits 38 the many distinguished physicists who made history here, 39 all of there white malesBut climb up to the third floor and you' II see a 40 display.There,among the photos of current facnlty members and students are portraits of the 41 head of the department,Marjorie Shapiro and four other women whose reseaich 42 everything from the mecheanics of the universe to the smallest particles of matter.A、sixth woman was hired just two weeks ago.Although they' re Still only about 10 percent of the physics faculty,women are clearly a presence here.And the real 43 may be in the smaller photos to the right graduate and undergraduate students about 20 percent of them female.Every yearsBerkeley sends its fresh female physics PhDs to the country' S top universities.That makes Shapiro optimistic but also 44 "I believe things are getting bette "she says "but they' re not getting better as 45as i would like."