孕32～34周时血容量增加至
心脏容量从妊娠早期至妊娠末期约增加

A.10%

B.20%

C.30%～45%

D.15%

E.30%

Which of the following is responsible for 10% of preventable cancer

A．Smoking & alcohol use.

B．Alcohol use & smoking.

C．Indoor smoke & low consumption of fruits and vegetables.

D．Low consumption of fruits, vegetables and alcohol use.