“先生将何之”是____句式。

正确交往 学会保护自我
情境一：八年级某班的女生、男生彼此喜欢用“那帮男生”“那帮女生”来称呼对方。
情境二：公共汽车上，小丹和小倩发现有个男青年不怀好意地往她们身上挤。她们往旁边让了让，男青年得得寸进尺，又向她们挤过来。她们对视了一下，同声呵斥道：“请你放尊重点！”男青年再也不敢对她俩无礼了。 

阅读以上短文，完成下面各题，每空一词。

（A）

    My ideal schoo lis not far from my home. It takes me 15 minutes to walk there. In the school, there are a lot of trees and flowers. It's very beautiful. We also have a big school library, a swimming pool and seven computer rooms. We begin our classes at 8:00 a.m. and finish them at 4:00 p.m. So we have a lot of time for after-school activities. Every day we only do our homework for an hour. Every month we can go on a school trip. How wonderful the school life is!

已知向量$\overrightarrow{a}$，$\overrightarrow{b}$的夹角为60°，且|$\overrightarrow{a}$|=2，|$\overrightarrow{b}$|=1，若$\overrightarrow{c}$=$\overrightarrow{a}$﹣4$\overrightarrow{b}$，$\overrightarrow{d}$=$\overrightarrow{a}$+2$\overrightarrow{b}$，求

（1）$\overrightarrow{a}$•$\overrightarrow{b}$；                 

（2）|$\overrightarrow{c}$+$\overrightarrow{d}$|．