陕西省2023-2024学年度八年级第二学期阶段性学习效果评估(A)英语(RL)答案正在持续更新，本期2024衡中同卷单元卷答案网为大家整理了相关试题及答案，供大家查缺补漏，高效提升成绩。 about money or about families even though Austen did not marry,and had no children.28.What is the main idea of Paragraph 2?A.The childless often come under sharp criticism.B.Childlessness is to future workers'disadvantage.C.Many highly'successful people have no childrenD.The childless politicians get attacked in society29.The childless are prejudiced because people think the childlessA.have a strange way to show selfishnessB.set a bad example for young peopleC.are not as generous as those with childrenD.are the government's financial burden30.What does the underlined word"it"in Paragraph 4 refer to?A.Accepting more immigrants.B.Reducing the pensions for the aged.C.Encouraging parents to have more children.D.Supporting the political leaders with no children.31.What is the best title for the passage?A.In defense of the childless.B.Prejudice against non-breeders.C.Why don't they have children?D.Measures to address childlessness.Minimizing the environmental damage that new roads cause is generally regarded as a goodthing.But to do that,it helps to understand just how new roads cause the damage of which theyare accused.Recently,a group of researchers led by Dr.Gonzalez conducted an experiment and provedthat immigration is good for the health of animal populations.A road destroys only a small part ofthe habitat,thus destroying just a few local populations of creatures.So the argument thatroad-building itself is bad for biodiversity is not self-evidently correct.Those who neverthelesshold this view say that apparently separate local populations of animals are,in fact,parts of muchlarger populations connected via migration.According to this theory,when a local population struggles to move about-because of anepidemic,for example-individuals from neighboring communities can fill the gaps.The implications of the theory are straightforward.Cut local populations off from each otherand each is more likely to disappear.And roads are good at doing just that.Testing the theory withexperimental roads,however,would be expensive.Dr.Gonzalez's brainwave was to do the wholething on a much smaller scale.The team studied moss-covered rocks.On some rocks the researchers left the mossuntouched;on others they made "roadways"across to leave the moss isolated.After waiting sixmonths,they found that in the disturbed habitats nearly all the bug population had declinedcompared with undisturbed moss,and 40%of the species had become extinct.The real test came in the second part of the experiment.In this,the researchers removed mossmuch as before,but they left narrow moss paths to bridge the no-bug's-land between islands.The第6页，共10页命题/审题：成都石室中学北湖校区高2025届英语备课组