While digging in the Egyptian desert, huge fossil bones have been found by paleontologists, which appears to have been the second most massive dinosaur that ever lived.
A huge fossil bones have been found by paleontologists, which appears to have been
B huge fossil bones have been found by paleontologists, which appear to be from
C it appears that paleontologists have found huge fossil bones that are from
D paleontologists have found huge fossil bones from what appears to be
E paleontologists have found huge fossil bones, which are from what appear to be
在D和E中犹豫不决，选D难道是因为appear对应后面的the second most massive dinosaur，所以用单数，还请牛人指教。
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