—When are you going to fly to Taiwan this summer?

—________ we finish school. It will be a great holiday. [ ]

A. Because

B. Since

C. Until

D. As soon as

证券投资中的( )可以通过投资多样化、投资组合等方式得以分散。

A．经济周期性波动风险

B．信用风险

C．经营风险

D．财务风险