单纯性下肢静脉曲张的主要病因是 A．妊娠 B．动静脉瘘 C．深静脉受阻 D．静脉壁发

PPH

Part 4

Questions 26-45

·Read the following article and choose the best word for each space.
·For questions 26-45, mark one letter A, B, C or D on the Answer Sheet.

iPhone Left in Hot Car for Three Hours

The normally peaceful suburban town of Winnetka is still reeling following the news Monday (26) a local resident, whose name is being (27) by police pending a full investigation, left an iPhone unattended for more than three hours in a car (28) in the hot sun.
"Responding to calls from (29) . passersby, who observed the iPhone sitting in a vehicle in the parking (30) of the Westfield Shopping Center, police arrived on the (31) at approximately 4 p.m. and immediately intervened to save the device," said Winnetka police chief Douglas Blaine. "Security cameras have shown that the iPhone had been in the car— with the doors (32) and the windows rolled (33) —since 1 p.m. Due to the tragic and highly emotional (34) of this case, we cannot say any (35) at this time."
According to official police records, two officers forcibly (36) into the car at 4:07 p.m. and found the iPhone (37) face down on the dashboard. The iPhone at first showed no (38) of life, but after a tense few seconds, officers were able to wake it and get it to (39) to a series of simple touch commands. Police said that if the iPhone were left in the extreme (40) for any longer, it could have died.
The iPhone was rushed by ambulance to a nearby Apple facility for careful (41) .Miraculously, no damage to its memory, screen, or wireless capabilities was reported.
Upper-middle-class suburbanites from all over the North Shore area have reacted to the near-tragedy with an unprecedented outpouring of (42) . Hundreds of cards and letters have come streaming in, and local talk radio shows have been flooded (43) calls demanding that the iPhone’s (44) be prosecuted. Many have come forward offering to take the iPhone into their custody, and still (45) have donated free downloads, ringtones, and MP3s to the victimized object.

A．parked

B．driven

C．sold

D．washed

电气化铁路的输电线常用图所示的方式悬挂在钢缆上．钢缆的A端固定在电杆上，B端连接在滑轮组上．滑轮组由a、b、c三个滑轮构成，配重P由多个混凝土圆盘悬挂在一起组成，配重的总重为G，若不计摩擦和滑轮的重量，则以下说法中正确的是（　　） A．a为动滑轮，B端钢缆受到滑轮组的拉力大小约为3G B．a为动滑轮，B端钢缆受到滑轮组的拉力大小约为G C．a、c为动滑轮，B端钢缆受到滑轮组的拉力大小约为3G D．a、c为动滑轮，B端钢缆受到滑轮组的拉力大小约为G

男，42岁，劳累时心悸、气短2年，腹胀、尿少3天。心电图示心房颤动，心室率110次／分；胸部X线示心胸比值65%，肺淤血。有助于该患者诊断的辅助检查是（）

A.，心脏核素检查

B.心导管检查

C.超声心动图

D.心电图运动负荷试验

E.心电向量图

2009年在哈尔滨举办的世界大学生冬季运动会是第几届？（）

A.22

B.23

C.24

D.25