James Bentham, a co-author of the research from Imperial College, London, says the global trend is likely to be due primarily to improvements in nutrition and healthcare.

2019年6月四级真题（第二套）阅读 Section C

Karraker and co-author Kenzie Latham analyzed 20 years of data on 2,717 marriages from a study conducted by Indiana University since 1992.

2019年6月四级真题（第一套）阅读 Section C

Soupios, along with his co-author Panos Mourdoukoutas, developed their 10 golden rules by turning to the men behind that philosophy—Aristotle, Socrates, Epictetus and Pythagoras, among others.

2016年6月四级真题（第二套）阅读 Section B

Co-author Amy Zanne thinks that users probably range from climate-change researchers wanting to estimate how much carbon is stored in biomass, to foresters looking for information on different grades of timber.

2017年6月六级真题（第一套）阅读 Section C

Co-author Céline Le Bohec, from the University of Strasbourg in France, warned: "If there're no actions aimed at haling or controlling global warming, and the pace of the current human- induced changes such as climate change and overfishing stays the same

2019年12月六级真题（第三套）阅读 Section C

Co-author James Burke helped design the study.

2016年6月六级真题（第二套）听力 Section C

In a 2005 study, psychologist Laurence Steinberg of Temple University and his co-author, psychologist Margo Gardner, then at Temple, divided 6 people into three age groups: young adolescents, with a mean age of 14; older adolescents, with a mean age of 19

2018年6月六级真题(第二套)阅读 Section B