依次写出摩氏硬度等级和矿物名称。
参考答案：
①滑石、②石膏、③方解石、④萤石、⑤磷灰石、⑥正长石、⑦石英、⑧黄玉、⑨刚玉、⑩金刚石
. “I hear Johnson was badly injured in the accident.” “_______ let‘s go and see him.”
A．What‘s more
B．If so
C．Where possible
D．When necessary
企业专设销售机构人员的工资，应记入“生产成本”的借方。( )
