听句子，缩写原文。（）

A．We decided to sell the car when the oil Prices rose.

B．We should not delay solving the problem of oil prices.

C．We were at a loss as to whether to buy that expensive car or not.

D．We didn’t buy a car because of the floating oil prices.

现代肿瘤化学治疗水平是（）。

A.有些癌症单用化疗也能治愈

B.大部分癌症可用化学治疗治愈

C.化学治疗只有姑息性疗效，不能治愈癌症

D.只有手术切除后加用化疗，癌症才能治愈

E.化疗仅对不能手术切除的病例有根治或姑息性疗效