以下关于叽肉收缩的概念不正确的是A．肌肉收缩前的初长度越长，产生的肌张力最大 B．等

患者女，55岁，因“右下肢被重物挤压3h，肉眼血尿1次”来诊。查体：右下肢皮温降低、感觉异常、弹性减退。

不符合挤压综合征的临床表现是（）

A.肢体肿胀明显

B.骨擦音及骨擦感

C.压痛

D.皮温降低

E.感觉异常

18世纪70年代，有一位英国医生发现：

①烟囱清洁工中患皮肤癌的人多的让人不可思议。

②经常洗澡的清洁工比极少洗澡的清洁工得病的几率小的多。

(1)根据这位医生发现的事实推测，导致烟囱清洁工得皮肤癌的原因是____________。

(2)为了验证你的假设，可以进行动物实验，实验处理是：实验组：在动物的皮肤上每天定期涂抹__________；对照组，对动物的皮肤___________。一段时间后检查，如果实验组动物皮肤癌的比率明显___________于对照组，则证明你的假设成立。

(3)上述事例说明：人类生存的环境中可能含有某些_______物质，为了减少人们患皮肤癌的危险，人们必须去除这些物质来保护自己。

阅读理解。

    A traveler hurried down to the hall of an American hotel and went to the cash-desk. He had just 15 minutes

to pay his bill and get to the station. Suddenly he remembered that he had left something in his room. 

    "Look here, boy," he said to the bellboy, "run up to my room and see if I have left a parcel on the table

there. Be quick about it."

    The boy ran upstairs. Five minutes passed. The traveler was walking up and down the hall, looking very

angry. At last the boy appeared.

     "Yes, sir," he reported to the traveler, "you have left the parcel there, it's right on the table in your room."

1. The traveler _____. [ ]

A. ran down the street

B. came downstairs hurriedly

C. ran so quickly that he fell down

D. came into the hotel hall very quickly

2. Which statement is true? [ ]

A. He had to pay his bill and arrived at the station in 15 minutes.

B. It took him 15 minutes to go to the station from the hotel.

C. He could pay his bill in 15 minutes and then go to the station.

D. He had nothing but 15 minutes.

3. According to the passage, a bellboy is _____. [ ]

A. a boy whose work is to ring the bell

B. a boy who plays with a bell

C. a boy whose work in a hotel is to help guests with their bags

D. the hotel owner's boy

4. The traveler asked the boy _____. [ ]

A. to go upstairs

B. to look for his parcel

C. to fetch the parcel he had left in his room

D. only to see if the parcel was on the table in his room

5. Five minutes later, the boy _____. [ ]

A. ran up to the room

B. came downstairs

C. reported to the traveler in the room

D. came down to the hall but brought nothing back

关于鼻血管瘤正确的是

A．鼻腔常见，鼻窦则少见

B．鼻血管瘤分毛细血管瘤和海绵状血管瘤两类

C．毛细血管瘤由毛细血管组成，海绵状血管瘤由大小不一的血窦组成

D．毛细血管瘤和海绵状血管瘤的区别仅在于血管腔的大小

E．海绵状血管瘤镜下瘤体多有完整包膜，由大小不一的血窦组成

中国药典（2010年版）采用非水滴定法测定硫酸阿托品含量时，该药物与高氯酸摩尔比为（）

A.1：1

B.1：2

C.2：1

D.2：2

E.1：3