你可能感兴趣的试题
preserved is preserved has preserved will be preserved
All living creatures die in order to be eaten by others. All living creatures can be the food of others. All living creatures decay. Only a small number of living creatures can avoid being eaten by others.
All living creatures die in order to be eaten by others. All living creatures can be the food of others. All living creatures decay. Only a small number of living creatures can avoid being eaten by others.
All living creatures die in order to be eaten by others. All living creatures can be the food of others. All living creatures decay. Only a small number of living creatures can avoid being eaten by others.
preserve be preserved be preserving have been preserved
bad weather sun-ray floods decay
taken shot exposed preserved
a large number of remains a number of remains only a small number of remains few remains
they got other people to dig up bodies for them, they sold the bodies only to one surgeon. they dug up bodies not just from graveyards. they resorted to murder to get bodies.
a large number of remains a number of remains only a small number of remains few remains
The Origin of Life on Earth Life Forms on Earth The Discovery of Life on Earth The Preservation of the Past Life on Earth
The Origin of Life on Earth Life Forms on Earth The Discovery of Life on Earth The Preservation of the Past Life on Earth
bad weather sun-ray floods decay
bad weather sun-ray floods decay
a large number of remains a number of remains only a small number of remains few remains
The Origin of Life on Earth Life Forms on Earth The Discovery of Life on Earth The Preservation of the Past Life on Earth
preserving; are known to; as preserved; are known as; to preserving; are known as; to preserved; are known to; as
are not preserved is not preserved were not preserved have not been preserved