在所有生物中只有人类要经历青春期，即在完全成熟前的一段身体加速发育的时间，其他现已灭绝的只能从化石中研究的灵长目动物是否也有青春期就不得而知了，因为：以下哪一项能最合乎逻辑地完成题干的论述？（)
A．身体发育的最低速度表明青春期可能因物种不同而不同。
B．化石记录虽然仍在不断增加，但总会是不完整的。
C．检测青春期迅速发育须要对同一个人的不同年龄段进行测量。
D．已绝迹的灵长目动物的完整骨架极其稀有。

生物多样性是生态系统稳定性的基本保障，这是充满生命的地球的基本特征，也是人类赖以生存的无价之宝。但是，人类活动正在以惊人的速度减少生物多样性。20世纪以来，平均每天有一个物种灭绝，而进入90年代，科学家们估计每天灭绝140个物种，因而全世界有10%的高等植物和3/4的鸟类的生存受到威胁，全球270种龟类爬行动物中的42%、150种灵长目中的2/3濒临灭绝。这段文字意在强调（）。
A.多样的地球生物的种类正呈锐减趋势B.生物多样性是人类赖以生存的基础C.人类活动对地球生态系统产生严重影响D.如何保护地球生物多样性。

In Sports, Red Is the Winning Color When opponents of a game are equally matched, the team dressed in red is more likely to win, according to a new study. British anthropologists Russell Hill and Robert Barton of the University of Durham reached that conclusion by studying the outcomes of boxing, tae kwon do, Greco-Roman wrestling (摔跤),and freestyle wrestling matches at the 2004 Summer Olympics in Athens, Greece. In each event, Olympic staff randomly assigned red or blue clothing or body protection to competitors. When competitors were equally matched with their opponent in fitness and skill, the athletes wearing red were more likely to win. "Where there was a large point difference — presumably because one athlete was far superior to the other — color had no effect on the outcome," Barton said. "Where there was a small point difference, the effect of color was sufficient to tip the balance.” Joanna Setchell, a primate (灵长目)researcher at the University of Cambridge in England, has found similar results in nature. Her work with the large African monkeys known as mandrills shows that red coloration gives males an advantage when it comes to mating. The finding that red also has an advantage in human sporting events does not surprise her, and she adds that "the idea of the study is very clever." Hill and Barton got the idea for their study from a mutual interest in primates — "red seems to be the color, across species, that signals male dominance," Barton said. For example, studies by Setchell, the Cambridge primate researcher, show that dominant male mandrills have increased red coloration in their faces and rumps (臀部). In another study, scientists put red plastic rings on the legs of male zebra finches (斑胸草雀), which increased the birds’ success in finding a mate. Barton said he and Hill speculated that "there might be a similar effect in humans.” Hill and Barton found their answer by viewing Olympic competitors in the ring, on the mat, and in the field. "Across a range of sports, we find that wearing red is consistently associated with a higher probability of winning, the researchers write. Barton adds that this discovery of red’s advantage might lead to new regulations on sports uniforms. In the Olympic matches he studied, for example, it is possible that some medal winners may have had an unintended advantage — their clothing! Both Hill and Barton wanted to find out if color affects the outcomes of sports matches.
A. RightB. WrongC. Not mentioned

著名的邓巴数理论认为，人类智力许你拥有稳定社交人数最多为150人但这并不排除人类在社交生活中重新设定认知上限的可能性——人类已经傲到过这一点。与其他灵长目近亲相比，人类之所以能应付规模大得多的社交圈，原因在于数万年前人类发明了语言。狒狒通过轮流抓虱子的方式来巩固感情，而人类用修辞、八卦、演说、唱歌、讲故事和开玩笑等方式聚到一起。正是语言使得人类大脑的处理能力扩大到了150人。除非_____，否则我们的社交能力仍将保持在150人。

A.人类大脑处理信息的能力加速进化

B.网络化社交得到长足发展

C.彼此沟通的成本进一步降低

D.有像语言那样具有革命性意义的事物出现