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2017年10月15日托福阅读机经预测小范围版!
生物类
Dinosaurs and Parental Care
对应题目：
1. The word “alleged” in the passage is closet in meaning to
A.scattered
B.supposed
C.isolated
D.exposed
2. Paragraph 1 answers which of the following questions about parental care in dinosaurs?
A.Which type of parental care was more important for the survival of dinosaur young,prehatching care or posthatching care?
B.Why were dinosaur remains in eastern Montana preserved rather than destroyed over time?
C.Did Maiasaura hadrosaurs provide types of parental care not provided by other dinosaurs?
D.What evidence supports the view that Maiasaura females laid their eggs in nests?
Paragraph 1
Habitat Selection
From fossil evidence alone the question of whether or not dinosaurs cared for their young is very difficult to answer. Because behaviors are not preserved in the fossil record, we can only make inferences from indirect evidence. Parental care can be divided into two types of behavior: prehatching (building nests and incubating eggs—for example, sitting on top of them so as to warm the eggs and encourage hatching) and posthatching (feeding the young and guarding the nests). Most of our evidence comes from alleged dinosaur rookeries (places where nests are built). Several have been excavated in eastern Montana, where a large concentration of dinosaur nests was found at a place now called Egg Mountain. Most of these probably belonged to the hadrosaur Maiasaura. Preserved in these nests are the bones of baby dinosaurs. The finds at Egg Mountain and other sites around the world document that dinosaurs laid their eggs in nests.
Paragraph 2
The nests at Egg Mountain are reported to be equally spaced, separated by a space corresponding to the length of an adult Maiasaura. From this arrangement scientists have inferred that the nests were separated in this way to allow incubation in a tightly packed nesting colony. Although this interpretation is open to challenge, the discovery of Oviraplor adults on top of Oviraplor egg clutches (as determined by embryos in some eggs), is relatively powerful evidence that at least these dinosaurs incubated their nests.
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Temperature Regulation in Marine Organisms
Cell Theory
Poikilotherms
Forest Succession
The Role of Diapause
The Identification of the Genetic Material
How Plants and Animals Arrived in the Hawaiian Islands
Extinctions at the End of the Cretaceous
The Cambrian Explosion
The Extinction of the Dinosaurs
How Animals in Rain Forests Make Themselves Heard
Sociality in Animals
Constraints on Natural Selection
天文类Surface Fluids on Venus and Earth
Origin of the Solar System
Comets
文化艺术类
The Origins of Writing
Live Performance
The Origins of Theater
The Development of Printing
地质类
Early Theories of Continental Drift
Attempts at Determining Earth’s Age
How Soil is Formed
Earth’s Energy Cycle
Thermal Stratification
环境类
The Climate of Japan
The Role of the Ocean in Controlling Climate
经济类
Effects of the Commercial Revolution
Seventeenth-Century European Economic Growth
考古类
Environmental Impact of the Anasazi
The Collapse of the Mays
The Chaco Phenomenon
科学类
The Birth of Photography
Early American Printing Industry
农业类
Agricultural Society in Eighteenth- Century British America
Water Management in Early Agriculture
社会类
Population Growth in Nineteenth-Century Europe
Hunting and the Setting of Inner Eurasia
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