选择正确的列式。0U(`8x'[
(1)二年级有个4足球,又买来5个,二年级现在有几个足球?请选择acb;j8D.A0R:O+P;F,h6^'`)W4V8S0U(`8x'[
a.4+5=9(个)0U(`8x'[
b.4+5=9(球)0U(`8x'[
c.4+5=8(个)0U(`8x'[
(2)宝宝做算术题,做对了6道,错了1道,宝宝一共做了几道算术题?请选择cab.w/^5B'M/`0U(`8x'[
a.6+1=8(道)0U(`8x'[
b.6+1=7(道)0U(`8x'[
c.6+1=7(个)0U(`8x'[