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图示结构受到温度作用，则点C的位移为（）

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The words “these developments” (Para. 2, Line 1) most probably refer to ________.

A. the acts of violence against scientists
B. the use of animals in research
C. the techniques of planting bombs in cars
D. the establishment of new animal protection organization

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passage four：questions 26～30 are based on the following passage. In recent years, Israeli consumers have grown more demanding as they’ve become wealthier and more worldly-wise. Foreign travel is a national passion; this summer alone, one in 10 citizens will go abroad. Exposed to higher standards of service elsewhere, Israelis are returning home expecting the same. American firms have also begun arriving in large numbers. Chains such as KFC, McDonald’s and Pizza Hut are setting a new standard of customer service, using strict employee training and constant monitoring to ensure the friendliness of frontline staff. Even the American habit of telling departing customers to “Have a nice day” has caught on all over Israel. “Nobody wakes up in the morning and says, ‘Let’s be nicer,’” says Itsik Cohen, director of a consulting firm. “Nothing happens without competition.”
Privatization, or the threat of it, is a motivation as well.Monopolies（垄断者） that until recently have been free to take their customers for granted now fear what Michael Perry, a marketing professor, calls “therevengeful（报复的） consumer.” When the government opened up competition with Bezaq, the phone company, its international branch lost 40% of its market share, even while offering competitive rates. Says Perry, “People wanted revenge for all the years of bad service.” The electric company, whose monopoly may be short-lived, has suddenly mopped requiring users to wait half a day for a repairman. Now, appointments are scheduled to the half-hour. The graceless El Al Airlines, which is already atauction（拍卖）, has retrained its employees to emphasize service and is boasting about the results in an ad campaign with the slogan, “You can feel the change in the air.” For the first time, praise outnumbers complaints on customer survey sheets.
第26题：It may be inferred from the passage that ________.

A. customer service in Israel is now improving
B. wealthy Israeli customers are hard to please
C. the tourist industry has brought chain stores to Israel
D. Israeli customers prefer foreign products to domestic ones

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(1)绿化环境 (2)购买荒地 (3)住宅建成 (4)新区规划 (5)工厂迁址

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二、数学运算：共10题，要求你在四个选项中选出你认为正确的一项，要求充分利用所给条件下，求解决问题的捷径。
第 6 题铁路旁每隔50米有一根电线杆，旅客小李为了计算火车的速度，测出从经过第l根电线杆起到经过第40根电线杆止共用了2分钟。那么火车每小时行驶（）千米。

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