南京市公共卷英语样题.pdf

英语英语 From the loss of wildlife to rising sea levels,we all realize the problems that climate change can cause.Although it may seem like such problems wont influence most of us directly,it looks like future generations could grow up without something that many of us now take for granted:chocolate.According to an article published by the US National Oceanic and Administration,changes to the climate in the areas that produce cacao the plant from which chocolate is produced may mean that it will soon become extinct.Most of the worlds cacao grows in countries close to the equator,with over half of it growing in the African nations of Ghana and Ivory Coast.Its expected that by 2050,climate change will make temperatures in these countries rise faster,making it extremely difficult for cacao to grow there.The problem doesnt lie in increased heat,however,but in lower humidity(湿度),as its believed that rainfall will stay at the same level if the temperature rises.“In other words,as higher temperatures take more water out of soil and plants,its unlikely that rainfall will increase enough to make up for the loss,“Michon Scott,the articles author,wrote.To help fight this problem,researchers from Berkeley University in the US are working on changing the DNA of cacao plants to allow them to survive in drier conditions by using gene editing technology,according to the US New.1.Paragraph 1 is written to _.A.introduce the topic B.explained a problem C.state how the writer feels about chocolate D.show why rainfall has decreased in Africa 2.Which of the following sentences can be filled with word“extinct”in Paragraph 2?A.The house is guarded by an _ dog.B.The tiger in the cage gave an _ cry.C.It has been 250 years since the wolf became _ in Britain.D.The humans are the only _ animals to have developed speech.3.Where is cacao usually grown?A.In the southern hemisphere(半球).B.In the northern hemisphere.C.In the countries with lots of rain fall.D.In the countries near the equator.4.What does Michon Scott think is the key to the problem that cacao is difficult to grow?A.Hot weather.B.Dry soil.C.Lower humidity.D.High rainfall.5.What are researchers doing to help solve the problem?A.Finding new places to grow cacao.B.Asking farmers for help.C.Changing how cacao is produced.D.Changing the genes of cacao plants.