读句子，猜谜语。

1. It's long. It has no legs. It lives in a hole.

→ ______________________

2. It's tall. It has a long neck. It eats leaves. It walks slowly.

→ ______________________

3. It's black and white. It has two big black eyes. It's fat. It eats bamboos (竹子).

→ ______________________

4. It looks like a horse but it has stripes. The stripes are black and white. It eats grass.

→ ______________________

风险识别的特点之一是不确定性，这是风险识别( )的结果。

A．个别性和主观性

B．个别性和复杂性

C．主观性和复杂性

D．复杂性和相关性