Archaeologists have discovered fossils of million－year－old animals in excavations.A．remnan

The archaeologists have found several human skeletons.（英译中)

The cave might never have been discovered ______ by the distinguished French potholer, Ber

The doctors discover will have a ______ effect on mankind.A．extremeB．radicalC．excessiveD．p

Astronomers have discovered what may be five planets orbiting Tau Ceti, the closest singl

Dr. Harvey Gates, the noted scientist, might never have discovered the Kamron lizard （蜥蜴

The researchers have discovered that the formation of habit can be A. predicted B. reg