---- Where's Miss Li? Someone ______ for her in her office.
---- She _________ to the bank.
A：is waiting, has been
B：waits, has been
C：is waiting, has gone
D：waits, has gone
据资料统计，我国对矿物资源的回收利用率不到30%，对此，你有什么好建议？
53＋16=____
640＋320=____
1000－400=____
9×2=____
7×5＋7=____
400＋12=____
730－110=____
72＋30=____
3×5＋7=____
320＋270=____
七年级学生张强进入初中后一直长肉不长高，比同龄人矮一大截，他非常着急，怀疑自己的身体不正常。对此，下列选项中不正确的一项是（ ）
