组成脑干的神经系统结构是

EachyearintheUnitedStates,manyblackteenagers_______ofschool,eitherbecausetheycannotkeepuportheyhavetoworktosupporttheirfamily.

1973年，对以色列发动"十月战争"的埃及总统是()

WeweretoldthatSuewouldbeidealforthejob,butshe________badlywhenwetalkedtoher.

下列对关于个体手工业改造错误的是___________。