Over the past 50 years, the population of Ant-arctic(南极的) emperor penguins has declined(变少)by 50 percent. Researchers have shown that an unusually long warm spell(一段时间) in the Southern Ocean during the late 1970s led to the de-cline in the population of emperor penguins at Terre...
Jeff Desjardins
Over the years, with the population falling, Bert wanted to see that if insects like swallows and doves would all the other's above them on the sky. To make the fact clear and easy to understand other students, he also created a group at his junior high school.Part of the joy for Be...
解析 A 答案:A:has分析:主语The rapid growth of the world’s population over the past 100 years其中心词就是of之前的growth,所以谓语的数量上存在问题,改成has;这种of并有复杂修饰的结构只要判断中心词来确定谓语的数。参考译文:在过去的100多年里,由于人口迅速增加,使得耕地面积(意译)也得到了极大增长。反...
1Over the past 16 years, the population of the Amish people to 230,000, with roughly 5 childrenper family.[ ] A. had nearly doubled B. has nearly doubled C. nearly doubled D. has nearly been doubling 2Over the past 16 years, the population of the Amish people to 230,000, with...
Genome-assisted breeding offers hope of a new green revolution by helping to uncover and unlock novel genetic variation for crop improvement. Over the last 20 years, the genomes of 135 domesticated crops have been sequenced and assembled10, including those of orphan crops3. A draft genome for ...
Over the past hundred years, our world has changed greatly. The growth of population and wealth has caused many problems to our planet-sea levels have risen 15cm over the past century; the Amazon rainforest has been cut by 17% in the last 50 years; 60% of animals have been killed sinc...
Increasingly over the past ten years, the general population (and especially young people)has become aware of the need to change its eating habits, because much of the food we cat, particularly processed foods, is not good for our health. Conversely, there has been a growing interest in natu...
Although the voyages were initially unpromising, they marked the beginning of the integration of the subcontinent into the new world economy and the dominance of Europeans over the indigenous inhabitants. The Portuguese in west-central Africa Portuguese influence in west-central Africa radiated over a ...
We performed spatiotemporal kriging110 of these proportions over the last 12,900 years, in intervals of 300 years, with a 5,000-point spatial grid spanning western and central Eurasia. We used the R package gstat to fit a spatiotemporal variogram via a metric covariance model, and perform ...