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D Forests are always losers at the Olympics, and that’s unlikely to change anytime soon. For the winter games in PyeongChang, South Korea, virgin forest was destroyed on Mount Gariwang to accommodate ski runs. For the 2022 Winter Olympics in Beijing, a ski run is set to wipe out part of the Songshan National Nature Reserve .And let’s not forget the 240 acres of Atlantic Forest that were leveled for the 2016 games in Rio de Janeiro to make way for a golf course. For the upcoming Tokyo games, environmental and human rights advocates have been raising alarms about the use of tropical wood to build the New National Stadium. Activists have fought against such environmental destruction. The damage is often permanent, threatens endangered plants and animals and, in some cases, causes conflicts with native people .But frequently the country’s organizing committee, and the International Olympic Committee (IOC) have found ways to make it reasonable—despite a paragraph in the Olympic Charter that states that the IOC’s role is to “encourage and support a responsible concern for environmental issues.” As it stands now. the IOC has little authority over a city’s local organizing committee, which finally plans the event, Chappelet, professor of public management at the University of Lausanne, told Earther . “Even if the IOC is dissatisfied with the way host cities have prepared for the games, they have no built-in systems to supervise ( 监督 ) them so that they strictly follow the Olympic Charter. The only thing they can do if they’re not happy is to withdraw the right to organize the game. But the IOC could include more enforcement ( 执行 ) systems into the contract ( 合同 ) they make with the host city, he added. That contract must be signed and obeyed by everyone. Those who break it could be fined. Boykoff, the author of several books on the Olympics, suggested a similar solution. “The IOC could insist that host cities prioritize their ecological promises, but instead they look the other way, time and time again,” he said.
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【单选题】下列说法正确的是                                                         (      )
A.
铜 、酒精、冰醋酸分别属于非电解质、电解质、弱电解质
B.
碱性氧化物一定是金属氧化物
C.
煤的干馏、煤的液化都属于物理变化
D.
冰醋酸、碱式碳酸铜、小苏打分别属于酸、碱、盐
【单选题】下表中有关物质的分类正确的是 项目
A.
B.
C.
D.
电解质 CO 2 Ca(OH) 2 CaCO 3 HNO 3 非电解质 蔗糖 铜 酒精 水
【单选题】建筑平面图的常用比例为
A.
1:100
B.
1:1000
C.
1:500
D.
1:20
【简答题】现有①铁片②NaNO 3 ③NH 3 ·H 2 O ④FeCl 3 ⑤酒精⑥H 2 S其中属于电解质的是(填写序号) ,属于非电解质的是 ,属于强电解质的是 ,属于弱电解质的是 。写出其中可发生水解的物质的水解离子方程式 。
【单选题】建筑平面图的常用比例为( )
A.
1:500
B.
1:20
C.
1:1000
D.
1:100
【判断题】酒精是非电解质。
A.
正确
B.
错误
【单选题】下列各组关于强电解质、弱电解质、非电解质的归类,完全正确的是
A.
B.
C.
D.
强电解质 Fe NaCl CaCO 3 HNO 3 弱电解质 CH 3 COOH NH 3 H 3 PO 4 Fe(OH) 3 非电解质 蔗糖 BaSO 4 酒精 H 2 O
【判断题】液态酒精、酒精的水溶液不导电,所以酒精是非电解质
A.
正确
B.
错误
【简答题】下列说法中正确的是 _________ 。 ( 1 ) NaCl 溶液导电,所以 NaCl 溶液 是电解质; ( 2 ) 固体 NaCl 不导电,但 NaCl 是电解质; ( 3 ) Cu 能导电,所以 Cu 是电解质; ( 4 ) SO 3 溶于水能导电,所以 SO 3 是电解质; ( 5 ) BaSO 4 的水溶液不导电,所以 BaSO 4 是非电解质。 ( 6 )液态酒精、酒精的水溶液不导电...
【单选题】建筑平面图的常用比例为
A.
500
B.
1: 20
C.
1: 1000
D.
1: 100
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