The medicine ___ as soon as you take it. But it ____ the blood.

A．brings into effect; effects

B．takes effect; has a bad effect on

C．comes into effect; has little effect on

D．is carried into effect; has much effect on

下列措施中属于环境风险防范、减缓措施的是( )。

A．工艺技术设计安全防护措施

B．紧急急救站或有毒气体防护站设计

C．消防及火灾报警系统

D．选址、总图布置和建筑安全防范措施