下列各项动物行为，属于学习行为的是（） A．母鸡孵卵 B．蜘蛛结网 C．蜜蜂采蜜

关于协调性子宫收缩乏力的叙述正确的是

A．子宫收缩极性倒置

B．容易发生胎儿窘迫

C．不宜静脉滴注缩宫素

D．产程常延长

E．不易发生产后出血

Most people have no idea of the hard work and worry that gointothe collecting of those fascinating birds and animals that they pay to see in the zoo.One of the questions that is always asked of me is 1 I became an animal collector in the first 2.The answer is that I have always been interested in animals and zoos.According to my parents, the first word I was able to say with any 3 was not the conventional “mamma” or “daddy”,4 the word “zoo”, which I would 5 over and over again with a shrill 6 until someone, ingroupsto 7 me up, would take me to the zoo.When I 8 a little older, we lived in Greece and I had a great 9 of pets, ranging from owls to seahorses, and I spent all my spare time 10 the countryside in search of fresh specimens to 11 to my collection of pets.12 on I went for a year to the City Zoo, as a student 13 , to get experience of the large animals, such as lions, bears, bison and ostriches,14 were not easy to keep at home.When I left, I 15 had enough money of my own to be able to 16 my first trip and I have been going 17 ever since then.Though a collector's job is not an easy one and is full of 18 ,it is certainly a job which will appeal 19 all those who love animals and 20.

请在17处填上正确答案（）

A.normally

B.regularly

C.usually

D.often

消防器材设专人管理，应做（），确保消防器材完好

8个月婴儿，急起喘憋1天。查体：体温38.1℃，呼吸82次／分，心率160次／分，烦躁不安，唇发绀，满肺哮鸣音，喘憋缓解时可闻少许中、细湿啰音，肝右肋下2cm。

为进一步确诊，下列检查哪项能帮助快速诊断（）

A.血象检查

B.胸部X线摄片

C.鼻咽拭子分泌物标本作病毒分离

D.气管吸出物、血液作细菌培养

E.免疫酶标法测鼻咽拭子或痰中病原微生物