根据句意和首字母提示完成单词。

1. My brother couldn't r_______ a boat when he was six.

2. Jane is a s________ girl. She's very good at her subjects.

3. Three p_______ four is seven.

4. Wen Yong is good at making m_______ planes.

5. Tom did it y_______, not today.

下列性质中，不属于大多数金属通性的是[ ]

A. 有银白色光泽

B. 有延展性

C. 有良好的导电性和导热性

D. 有很高的熔点和硬度