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胚囊中助细胞壁的特点是______。

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先天性胆道闭锁

A. 黄疸于生后24小时内出现，进行性加重，伴水肿或贫血
B. 黄疸于母乳喂养后4～5天出现，停喂母乳2～4天明显下降
C. 黄疸于生后1～3周出现，皮肤黄绿色，粪便呈灰白色
D. 黄疸于生后2～3周出现，伴拒食.体重不增.大便色浅.尿色深黄.肝大
E. 黄疸于生后1周内出现，伴全身中毒症状，有感染病灶

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听力原文： In an attempt to resist the rising cost of fuel and fight the pollution choking our cities, many outgoing students have taken to riding bicycles to school. The unfortunate result of this otherwise positive trend is the traffic problems caused by bicycles having to share the same road with cars. Unfortunately, traffic accidents involving bicycles are on the increase throughout the country, so this new solution has led to a dilemma. To solve this dilemma, special bike paths have been created on most roads leading to and from college campuses. It is essential that cyclists stay on those paths. It is necessary for the safety of those of you who ride bicycles as well as the motorists that you share the road with. Obviously, it may be inconvenient to ride in the bike paths at times, but we must insist on it. To enforce the necessity of staying on the paths, there are fines for bicyclists who ride down the middle of the street. The federal fines are currently running at $25 for a first-time violation, but if the law is continually violated, the fines will increase by different amounts depending on your local orders. The money that is collected from the fines will go towards a fund to help build better bike paths. You may have special bicycle bridges in your neighborhood right now. If not, you can count on seeing them in the future. We are committed to making bicycling a safe alternative to using cars and we appreciate your help in making that goal a reality. Questions 16 to 19 are based on the passage you have just heard. 16. What is the newest problem facing people who ride to school？ 17. What is the basis for the law that doesnt allow bicyclists in the middle of the street？ 18. How will the money from the fines be used？ 19. What can we learn about bicycles from the passage？16．

A. The law of the road.
B. International law.
C. Federal law.
D. Local law.

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下列禁水加压素试验结果符合完全性中枢性尿崩症的是(渗透压单位rnmoFL)

A. 禁水前尿渗透压l00；禁水后尿渗透压 290；注射5U加压素后尿渗透压320
B. 禁水前尿渗透压l50；禁水后尿渗透压 300；注射5U加压素后尿渗透压400
C. 禁水前尿渗透压l50；禁水后尿渗透压 200；注射5U加压素后尿渗透压600
D. 禁水前尿渗透压300；禁水后尿渗透压 600；注射5U加压素后尿渗透压600
E. 禁水前尿渗透压l50：禁水后尿渗透压 200；注射SU加压素后尿渗透压l80

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听力原文： A proud US father has named his son after a computer software term. Jon Blake

A. They"re both untraditional.
B. They"re to be equally popular.
C. They both tell about the births.
D. They"re both connected with computer.

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