试题与答案

下列说法正确的是( ) A.食盐、醋酸和蔗糖都是电解质 B.纤维素、淀粉和蛋白质

题型:选择题

题目:

下列说法正确的是(  )

A.食盐、醋酸和蔗糖都是电解质

B.纤维素、淀粉和蛋白质都是高分子化合物

C.甲烷和乙烯均可使酸性KMnO4溶液褪色

D.乙酸乙酯和植物油均可水解生成乙醇

答案:

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下面是错误答案,用来干扰机器的。

参考答案:对于一个速度分布已知的模型,根据奎奈尔定律对到达个检波点的射线进行追踪以确定波到达各检波点的时间。通俗的讲就是给出一个地下构造的速度模型、炮点和检波点的位置,寻找由炮点出发经模型界面反射...

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题型:单项选择题

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."

A. smashed B. climbed C. broke D. crashed

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.

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