肺癌起源于支气管黏膜上皮，早期局限于下列哪个部位称为原位癌（） A.细支气管 B.支

足月儿生后48小时，有重度窒息史，生后不久即出现意识障碍，反复惊撅，前囟隆起，颅缝分裂，诊为缺氧缺血性脑病，该患儿脑损伤主要部位是（）

A.大脑皮层

B.脑干核

C.小脑

D.延髓

E.中脑

搅拌中种面团时为控制理想温度为25℃，下列何者为宜（）

A.搅拌时间延长

B.水温提高

C.搅拌时间约3～5分钟

D.用高速搅拌

A columnist is discussing how the efficient quantity of output for a good or service is determined. These two statements appear in his column: Statement 1: The equilibrium quantity of production for a good or service can be considered efficient as long as the marginal social benefit of that quantity is greater than its marginal social cost. Statement 2: Subsidies and quotas typically result in production of a good or service in quantities at which the marginal social cost exceeds the marginal social benefit. Are these statements correctStatement 1 Statement 2 （） ①A. CorrectCorrect ②B. CorrectIncorrect ③C. Incorrect Incorrect

A. ①

B. ②

C. ③

新闻影像有时不被处理的原因是（）。

A.节约成本

B.保持新闻的真实性

C.政策规定

D.观众更容易接受

人工流产术后多少时间怀孕较好？