题目

Spring Bud Project（春蕾计划）is to help poor young girls return to schoo1．In the past ten years，more than 10 million children haven’t been able to finish school and 70％of them are girls．In fact，girls’ education has become the most difficult problem in China． By the end of the 2005 school year，Spring Bud Project had helped 300,000 girls return to school and set up more than 1,000 girls’  classes in 27 provinces，       Your donations（捐款）can also help the girls．   a）A donation $400 call help one girl study in a school for a whole school year．   b在pH=1的无色溶液中，下列离子能大量共存的是       A．NH4+、Ba2+、NO3—、CO32—B．Fe2+、OH—、SO42—、MnO4—C．K+、Mg2+、NO3－、SO42—D．Na+、Fe3+、Cl—、AlO2—