根据句意及首字母提示完成单词

①The young man looked quite f____, but she couldn't remember his name.

② When Mr. Wang arrives, please ask him to go u____ for the meeting.

③ —I don't know what to wear at the party.

—I have no idea, e____.

④ Another two g____ are needed to keep people in the neighborhood safe.

⑤You mustn't drive up a street with a No E____ sign.  

如图所示，将系在细线下的小球拿至A点，然后由静止释放，小球将在A、C 两点之间往复摆动，如果不考虑空气对小球的阻力，下列分析中正确的是（  ）

如图所示，一个木块在光滑水平面上以v₀的速度做匀速直线运动，冲上粗糙斜面后最终静止在A点。以下关于木块在斜面上受到摩擦力的说法正确的是（　　）

设函数f（x）=$\left\{\begin{array}{c}1+{\log }_2\left(2-x\right),x<1\\ 2^{x-1},x\ge 1\end{array}\right.$，则f（﹣2）+f（log₂12）=（　　）