题目

在一个由“草→田鼠→猫头鹰”组成的食物链中，若消灭了全部的猫头鹰，田鼠的数量会（ ） A．直线上升           B．直线下降              C．保持不变          D．先上升后下降 答案：DA massive winter storm is expected to begin hitting Massachusetts tonight, dumping up to a foot or more of snow in some areas, while whipping the coast with powerful winds and driving rains, forecasters predict. “It’s got a little bit of everything,” William Babecock, a meteologist（气象学家）at the National Weather Service in Taunton, said of the post-Christmas storm that brought snowstorm conditions to the Ohio Valley before heading east with its mixed bag of snow, sleet, and rain. State Highway Administrator Frank De Paola said more than 4,000 states and snowplows（扫雪车）and salt spreaders were ready to make the roads safer for holiday travelers. “MassDOT will be fully staffed and will be ready to handle this,” De Paola said, nothing that the storm, which should bring snow to most of the state except the Cape and Island before turning into rain tomorrow, is Massachusetts’ first significant snow storm of this winter season. “There have been events where we have had pretty much freezing, icing concerns, which we have treated with chemicals.But this is the first big event that will call for plowing,” he said. A high wind watch has been issued for southeastern Massachusetts, including Cape Cod, Forecasters say the wind could reach 60 mph, possibly bringing down power lines. In Worcester, some were busy for severer by buying rock salt,shovels and windshield wash,Barrows Hardware president Brain Barrow said.He called the volume（总量）of customers at his Webster Street store very steady on Wednesday morning, “You do get that supermarket effect for sure,”he said of shoppers stocking supplies before a storm. There were no flight delays or cancellations at Logan International Airport in Boston as of day,” Right now, everything’s running normally.” airport spokesman Richard Walsh said.But Walsh said as the day progressed, travelers should contact their airlines directly to check the status of their flights.1.According to William Babecock, we can know that_____.A. snow, sleet, and rain occurred after ChristmasB. nothing has been done to prepare for the winter stormC. 400 snowplows were ready for the snowD. the snowstorm came from the Ohio snow2.We can conclude from Paragraph 5 that_____.A. this winter season is filled with great significanceB. Massachusetts seldom sees snow all year roundC. here are some poisonous chemicals in the snowD. the icy roads have inconvenienced people3.Some people bought supplies _______.A. became they got affected by the supermarketB. because they were wrongly directed to do thisC. because they were excited to be informedD. because they were preparing themselves for the snow4.What does the author mainly want to say in the passage?A. People tend to fall into a panic when faced with had weatherB. The government shows concern for people’s living conditionsC. People from all walks of life have gotten ready for the snowD. Flights usually aren’t affected much by had weather