22 选择性必修2 Units 1-2（课件）-【衡水金卷·先享题】2023高三一轮复习周测卷（40分钟）英语（广东专版）新教材新高考 课件

1 高三一轮复习40分钟周测卷 二十二 （二十二）选择性必修2 Units 1-2 2 （考试时间40分钟,满分100分） 一、阅读（共8小题;每小题5分,满分40分） 阅读下列短文,从每题所给的A、B、C、D四个选项中选出最佳选项。 A This planet has a hard enough time feeding 7.6 billion mouths. But what happens when the population reaches 9 billion in just a few decades? We’re getting bigger and hungrier, according to a new study from Norwegian scientists. “It will be harder to feed 9 billion people in 2050 than it would be today,” Gibran Vita, a researcher at the Norwegian University of Science and Technology explained. 衡水金卷先享题周测卷 英语·新高考·广东 3 For the study, researchers compared average adult humans from 1975 and 2014 from 186 countries. They noted that the average human in 2014 was 14 percent heavier than his 1975 counterpart. He was also 1.3 percent taller and required 6.1 percent more energy than that 1970s human. “An average global adult consumed 2,465 kilocalories （千卡） per day in 1975,” Vita explained. “In 2014, the average adult consumed 2,615 kilocalories.” Nor is that all, 2014 human populations were older — on average, they lived 6.2 percent longer. So, over 40 years, humans got bigger and hungrier and hung around longer than before. Our population will hit the 9 billion mark by 2050, although some scientists suggest we’ll rocket to 12 billion by the end of this century. 衡水金卷先享题周测卷 英语·新高考·广东 In any case, there are already plenty of scientific models that forecast how we’ll feed these fresh, hungry mouths. But until now, we’ve supposed those mouths will eat at a fairly standardized rate: every human requires a fixed amount of energy from food. The new research suggests those energy levels are anything but fixed. Bigger humans will need a bigger piece of the pie. In other words, we need to change food supply models. “Previous studies haven’t taken the increased demands of larger people and aged societies into consideration when calculating the future food needs of a growing population,” study co-author Felipe Vásquez noted. If the