6.2小时=6小时20分。[ ]

Four men who would become fathers were in a hospital waiting room while their wives were going to give birth to their babies. The nurse arrived and proudly said to the first man, “Congratulations, sir. You’re the father of twins!”

“What a surprise! Believe it or not! I work for the Minnesota Twins Baseball teams!”

Later the nurse returned and congratulated the second father on the birth of his triplets (三胞胎).

“Wow! That’s unbelievable! I work for the 3M Company.”

An hour later, the nurse returned to congratulate the third man on the birth of his quadruplets (四胞胎). Surprised, he only could answer, “I don’t believe it! I work for the Four Seasons Hotel!”

　　After this, everyone turned to the fourth man who had just fallen down. The nurse ran fast to his side. As he slowly came to himself, they could hear him speak in a very low voice over and over, “I should never have taken that job at 7-Eleven. I should never have taken that job at 7-Eleven. I should never have taken that job at 7-Eleven.”

小题1:Why were the fathers there?

A．They were waiting for their wives.

B．They were seeing doctors.

C．They were waiting for their babies to be born.

D．They were working at men nurses there.小题2:Which of the following is true about the third man?

A．He thought the nurse made a mistake.

B．He was very surprised at the nurse’s words.

C．He didn’t want to have these babies.

D．He should never have worked at 7-Eleven.小题3:Why did the fourth man fall down after hearing the nurse’s words?

A．He was afraid of having so many babies.

B．He was seriously ill.

C．He was too excited.

D．He was very glad to have 7 babies.小题4:At least how many babies would be born according to the story?

A．9.

B．10.

C．11.

D．16.

用pH均为2的盐酸和醋酸溶液，分别中和等体积、等物质的量浓度的氢氧化钠溶液，当氢氧化钠恰好被完全中和时，消耗盐酸和醋酸溶液的体积分别为V₁和V₂，则V₁和V₂的关系正确的是（　　）

A．V₁＞V₂

B．V₁＜V₂

C．V₁=V₂

D．V₁≤V₂

简述成本控制的原则。

X-连锁淋巴组织增生性疾病对以下哪种病原体易感

A．C杆菌
B．呼吸道合胞病毒
C．EB病毒
D．巨细胞病毒
E．单纯疱疹病毒

汉字中只有一笔的字有（）个。