十二指肠球部溃疡病人，突然腹痛加重，上腹有压痛及反跳痛，诊断为A．急性胆囊炎 B．急

根据课文内容回答问题。

《元帅的故事》为我们讲述了哪两位元帅的故事？这是两个怎样的故事？

_________________________________________

如下图所示，一架飞机在北半球高空自东向西飞行，可判断出 (         )

A．飞机顺风飞行

B．飞机逆风飞行

C．飞机在西北风中飞行

D．风从南侧吹来

苯丙酮尿症的患儿一般于何时开始出现症状（）

A.出生时即有症状

B.出生3～6个月

C.出生6～9个月

D.1岁时

E.出生2个月

1mol甲醛和氢气组成的混合物质量为16g，完全燃烧后的产物通过足量的Na₂O₂，Na₂O₂增加的质量为

A．8g

B．16g

C．20g

D．40g

Speaker A. I'm awfully sorry. I hope I haven't spoiled it.Speaker B: ______

A．Oh, it's nothing. Don't let a little thing like that worry you.

B．I know you are unintentional. Just be more careful next time.

C．There is no need for you to say sorry. Anyway, I can buy a new one.

D．You are right. You haven't spoiled it. You see, it's still in good condition.