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TF阅读真题第881篇Reconstructing the Spread of the Grain Weevil
Reconstructing the Spread of the Grain Weevil Perhaps the most common, most widespread, and arguably most destructive pest of stored grain in history is the grain weevil Sitophilu...
TF阅读真题第876篇Tyrannosaurus rex: Predator or Scavenger?
Tyrannosaurus rex: Predator or Scavenger? Tyrannosaurus rex was among the largest of the theropods, a group of mostly carnivorous (meat-eating) dinosaurs that roamed the Earth dur...
TF阅读真题第823篇The Radiocarbon Dating of Prehistoric American Sites
TF阅读真题第823篇The Radiocarbon Dating of Prehistoric American Sites
TF阅读真题第891篇The Early Iron Age
The Early Iron Age During the Bronze Age (roughly 3300-1200 B.C.E. in the Middle East), civilizations were limited in their use of iron. Most iron occurred not in ...
TF阅读真题第897篇How Fossils Map the Past
How Fossils Map the Past Only a tiny fraction of the organisms that have lived during the geologic past have been preserved as fossils.Normally the remains of an ani...
TF阅读真题第889篇The Moon’s Origin
The Moon's Origin One of the earliest scientific theories about the Moon's origin postulated that Earth and its moon formed out of a dust cloud alongside one another, much a...
TF阅读真题第886篇Opera in Seventeenth-Century Venice
Opera in Seventeenth-Century Venice Opera, a form of drama set to music and featuring vocal performance supported by an orchestra, was born in Italy at the very end ...
TF阅读真题第833篇The Radiocarbon Dating of Prehistoric American Sites
TF阅读真题第833篇The Radiocarbon Dating of Prehistoric American Sites
TF阅读真题第888篇The Origin of Mars’s Moons
The Origin of Mars's Moons Mars has two tiny moons, Phobos and Deimos. The orbits of both these satellites are nearly circular and close to the planet: Phobos orbits...
