经过抛物线y2=4x的焦点作直线交该抛物线于A（x1，y1）、B（x2，y2）两

某品牌企业在京津冀地区建有饮用瓶装水厂。读图6，回答第10、11题。

瓶装水厂如此选址的主要原因是（）

A．利用优于授权地区的水源

B．靠近技术发达地区

C．吸引高素质的劳动力

D．降低运输成本

1岁男婴，母乳少，长期以米汤，稀饭喂养，不规律添加辅食，食欲差，精神差，皮下脂肪厚度为0.5cm，诊断为：I度营养不良。下面表现哪个最先出现

A．皮肤干燥
B．肌张力不低于，肌肉松弛
C．身高低于正常
D．皮下脂肪减少
E．体重不增或减轻

岁小儿，腹泻7天，经第一阶段输液后已排尿，呼吸平稳，脉搏有力，血钠136mmol／L，CO₂P18.6mmol／L，血钾3.6mmol／L。第二阶段应用哪种液体继续补液（）

A.4∶3∶2液

B.生理盐水

C.生理维持液

D.2∶1等张含钠液

E.6∶2∶1含钠液

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).

关于重型胎盘早剥的临床诊断，正确的是

A．妊娠晚期无痛性 * * 出血

B．腹部检查子宫硬如板状，有压痛

C．触诊胎位清楚

D．贫血程度与出血量成正比

E．听诊胎心率正常