流行性乙型脑炎护理错误的是（）

A.患儿居室应保持凉爽通风

B.室温控制在10～15℃

C.密切观察体温、呼吸、脉持、血压及瞳孔变化

D.保持口腔清洁

E.经常变换体位

English is_____ math, so we like to learn it.

A．not so difficult as

B．more difficult than

C．less easy than

D．not as easy as