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问题 单项选择题 A3/A4型题

患儿，女，5岁。患白血病8个月，予正规化疗，现发热1天。查体：体温40.1℃，胸骨压痛，各关节疼痛。心肺腹部未见异常。

急性白血病的治疗，总疗程需持续完全缓解多长时间方可停止治疗（）

A.5年

B.3.5年

C.2.5年

D.2.5～3.5年

E.6年

答案

参考答案：D

解析：总疗程需持续完全缓解2.5～3.5年方可停止治疗，并继续追踪观察数年。有条件者可采用造血干细胞移植，不仅可提高患儿的长期生存率，而且还可能根治白血病。一般在第一次化疗完全缓解后进行。

单项选择题

直流降压运行的电压定值一般取额定电压的（）。

A.30-40%

B.40-50%

C.50-60%

D.70-80%
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填空题

How did the Olympic Games start In ancient Greece athletic festivals were very important and had p ________ (1). Originally the Festival was held in honour of .Zeus, the supreme god in Greek Mythology. Eventually the Olympian athletic festival had lost its ________ (2) and became an international event. No one knows exactly ________ (3) the Olympic Games go, but some scholars recorded date from 776 B.C.According to some scholars, at first the only Olympic event was ________ (4), called a stadium and that was the only event until 724 B.C. After that, other ________ (5) were added and sixteen years later in ________ (6) the pentathlon was added and wrestling became part of the games. This pentathlon was a five-event match which ________ (7) running, wrestling, leaping, throwing the discus, and hurling the javelin.The games were held ________ (8) and after an uninterrupted history of 1170 years, the games ________ (9) in A.D. 394, the Christian era, because of their pagan origin.It was over ________ (10) before there was another such international athletics gathering. In 1896, the first of the modern ________ (11) opened in Athens, Greece.Nowadays, the Games are held in different countries ________ (12). The host country provides vast facilities such as stadiums and ________ (13).Many more sports are represented, including the very celebrated event: ________ (14).The Olympics start with the arrival in the stadium of a torch, ________ (15) on Mount Olympus by the sun’s rays. The torch is carried by ________ (16) to the stadium. The Olympic flame symbolizes the ________ (17) of the ancient Greek athletic ideals, and it burns throughout the Games until ________ (18). The well-known Olympic flag, however, is ________ (19): the five interlocking rings symbolize the uniting of all five continents ________ (20).
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