1.   An abundance of salmon and sea-run trout in Alaska may assure that none of these species will go extinct globally any time soon.

2.   And if liquid water once existed on Venus and Mars, then it may have nourished primitive life forms that have since gone extinct.

3.   Before going extinct there, the wild horse crossed to Central Asia over land bridges later flooded by the Bering Sea.

4.   Biologists feared that the bird would go extinct and started collecting chicks and eggs for captive breeding programs.

5.   But at the end of the last Ice Age, three of every four mammals that went extinct were megafauna.

6.   But the dinosaurs went extinct with more style.

7.   But the team of researchers also found evidence that many species were going extinct in habitats not frequented by the perch.

8.   But those local ants are going extinct anyway as the imported ones move in.

9.   Casts of both the fossil Theropithecus that went extinct and its baboon cousin that still thrives will be on display in the Academy exhibit.

10.   Far more species are now going extinct faster than the evolutationary process can replace them.

v. + extinct >>共 7
be 47.20%
become 41.87%
go 9.87%
end_up 0.27%
fall 0.27%
fell 0.27%
seem 0.27%
go + a. >>共 463
wrong 11.31%
public 7.53%
further 5.02%
bankrupt 3.47%
unnoticed 2.93%
unanswered 2.08%
bad 1.72%
deeper 1.70%
wild 1.49%
free 1.46%
extinct 0.16%
每页显示:    共 37