热浪席卷加拿大 全球气候危机警告
A heatwave (热浪) hit the western part of North America. Hot air went from California, US, to the Arctic. It moved very slowly.
Temperatures were almost 50 ºC in Canada’s British Columbia. More than 230 people died in the last four days. People must stay out of the sun and drink a lot of water.
People bought air conditioners (空调). Air conditioners kept the air in people’s homes cool. Farmers grew plants in North American prairies (大草原). The hot air killed the plants. Schools also closed.
The situation was bad. The weather was extreme. Scientists said that it would happen more often in the future.
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1.The heatwave happened ________.
A in the east of North America
B in the west of North America
C in the south of North America
D in the north of North America
解析：选B。B细节理解题。根据第一段A heatwave hit the western part of North America.可知，热浪袭击了北美西部。故选B。
2.Why was it very hot in British Columbia?
A Because the hot air moved fast.
B Because the cool air didn’t come.
C Because the hot air didn’t move fast.
D Because the hot air killed the plants.
解析：选C。C细节理解题。根据第一段A heatwave hit the western part of North America.和It moved very slowly.可知，热浪袭击了北美西部，且移动得非常缓慢。故选C。
3.Which of the following is NOT true?
A The plants died, too.
B Many people were dead.
C The temperature was high.
D The heatwave lasted for four days.
解析：选D。D细节理解题。根据全文可知，加拿大的不列颠哥伦比亚的气温接近50摄氏度，过去四天里有230多人死亡，热空气还导致植物死亡。文中并未提及热浪持续的时间，故选D。
4.Which is the best way to beat (战胜) the heatwave?
A To grow more plants.
B To close the schools.
C To drink a lot of water.
D To stay inside with air conditioners open.
解析：选D。D推理判断题。根据第二段People must stay out of the sun及第三段Air conditioners kept the air in people’s homes cool.可知，热浪来袭，人们必须远离太阳，而空调使人们家里的空气保持凉爽。由此推断战胜热浪的最佳途径是待在屋内，开着空调，故选D。
5.The scientists ________ in the last paragraph.
A gave us a warning
B made a future plan
C didn’t like the heatwave
D knew how the heatwave was
解析：选A。A推理判断题。根据最后一段可知，形势严峻，天气极端。科学家们表示，这种情况在未来会发生得更频繁。这其实是在给我们一个警示，故选A。