It took ______ building supplies to construct these energy-saving houses. It took brains, too.

A．other than

B．more than

C．rather than

D．less than

如果人身保险的投保人告知保险人，被保险人以后将不打算从事高危职业，那么，该投保人的这种告知类型属于（）。

A． 承诺告知

B．无限告知

C． 确认告知

D．有限告知