TPO33中一道阅读题

阿TTUID: 3573792

【Paragraph 2】Starting about 280 million years ago, reptiles were the dominant large animals in terrestrial environments. In popular language this was the era “when dinosaurs ruled Earth,” when a wide variety of reptile species occupying many ecological niches. However, no group or species can maintain its dominance indefinitely, and when, after over 200 million years, the age of dinosaurs came to a dramatic end about 65 million years ago, mammals began to flourish, evolving from relatively few types of small terrestrial animals into the myriad of diverse species, including bats and whales, that we know today. Paleontologists label this point in Earth’s history as the end of the Cretaceous period and the beginning of the Tertiary period, often abbreviated as the K-T boundary. This time was also marked by changes in many other types of organisms. Overall, about 38 percent of the families of marine animals were lost, with percentages much higher in some groups Ammonoid mollusks went from being very diverse and abundant to being extinct. An extremely abundant set of planktonic marine animals called foraminifera largely disappeared, although they rebounded later. Among plants, the K-T boundary saw a sharp but brief rise in the abundance of primitive vascular plants such as ferns, club mosses, horsetails, and conifers and other gymnosperms. The number of flowering plants (angiosperms) was reduced at this time, but they then began to increase dramatically.
5. According to paragraph 2, which of the following species initially increased in number at the K-T boundary?
○Dinosaurs
○Foraminifera
○Ferns
○Ammonoid mollusks

小站和黄金阅读的答案都是C。但我怎么都觉得D才是答案呢，因为有一句with percentages much higher in some groups Ammonoid mollusks went from being very diverse and abundant to being extinct. 求各位大神解答！谢谢！

foxfootUID: 3655182

Ammonoid mollusks went from (being very diverse and abundant) to being extinct.
from很多-->灭绝了

阿TTUID: 3573792

foxfoot 发表于 2015-11-1 22:16
Ammonoid mollusks went from (being very diverse and abundant) to being extinct.
from很多-->灭绝了

谢谢！