Thecumulative rainfall in Henan province during the four days was the highest si-组卷网

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The cumulative rainfall in Henan province during the four days was the highest since the province has records, the provincial meteorological service said. The rain was heaviest in the provincial capital, Zhengzhou, for a short period on Monday and Tuesday. Northern, western and central parts of Henan also experienced downpours, the service said. Zhengzhou's biggest one-hour precipitation (降水量) —201. 9 mm between 4 and 5 pm on Tuesday—was also the highest on the Chinese mainland. The previous record was 198. 5 mm in the village of Linzhuang in Zhumadian in August 1975, the National Meteorological Center said. The city's precipitation during the four days exceeded that of its average annual precipitation, the center said.

Chen Tao, chief forecaster at the National Meteorological Center, said abundant water vapor (水蒸气) brought by Typhoon In-Fa and the province's special geographical features led to Henan's rain. “Partly affected by the typhoon, large amounts of water vapor have been transported to China's inland areas, including Henan,” he said.

From Thursday to Monday, rain was forecast to continue in Henan. However, rainfall will gradually subside in Zhengzhou and the province's northern and central regions, though the storms will increase the risk of mountain torrents and other geological disasters. By Monday, lighter rain is forecast for parts of Henan, the provincial weather service said. However, local authorities are still urged to be vigilant and prepare to prevent or cope with flooding and other possible disasters.

Predicting such weather events remains a challenge worldwide because it involves many meteorological phenomena, the center said. “The formation of this kind of extreme weather, including rainstorms and high temperatures, is complex,” Chen said. “We still lack effective solutions and methods for such forecasting”, he said. “We are now putting a lot of effort into tackling the difficulty. We believe that as the technology improves, we can better forecast the events.”

【小题1】What message does the author mainly want to convey in the first paragraph?

A．heavy rain fell in Zhengzhou.

B．The rain in Henan lasted four days.

C．Zhumadian also suffered the similar heavy rain.

D．Henan experienced the biggest rainfall of all time.

【小题2】What can be indicated from Chen Tao's words?

A．It is not easy to forecast the extreme weather.

B．The rain of Henan is mainly caused by Typhoon In-Fa.

C．The center hasn't put a lot of effort into solving the problem.

D．Rainstorms and high temperatures can account for the heavy rain.

【小题3】What does the underlined word “vigilant” probably mean?

A．Relaxed.