根据所给汉语提示,写出空缺处单词正确形式。

1. I have a        (感觉)that we are being followed.

2. That food _______( 闻起来) delicious.

3. Most green fruits are        (酸的)

4. He is a ______(聪明的) boy.

5. This was a very       morning.

现金是现金规划的重要工具。与其他的现金规划工具相比而言，下列不属于现金特点的是( )。

A．现金在所有的现金规划工具中流动性最强

B．持有现金的收益率高

C．现金的收益率低

D．现金的风险性低