A.Both hypotheses cite Africa as an originating location.
B.Genetic studies have supported both hypotheses.
C.One hypothesis dates the emergence of homo sapiens much earlier than the other.
D.Both hypotheses regard Neanderthals to be the predecessors of modern humans.

A.two hypotheses and some evidence on the human origins debate.
B.evidence that supports the "Out of Africa" theory.
C.that fossils remain very much a part of the human origins debate.
D.the difficulties in obtaining agreement among theorists on the human origins debate.

A.Central Europeans and Australians
B.traits
C.skulls
D.Middle Easterners and Africans

A.off-spring
B.ancestors
C.pioneers
D.juniors

A.Historians
B.Inspectors
C.Advocates
D.Experts

A.theaters
B.attends
C.shifts
D.authors

A.evolve
B.protection
C.operate
D.robot

A.Otherwise
B.However
C.Therefore
D.Moreover

A.If they had breakfast, they wouldn't be hungry now.
B.If they had breakfast, they would have been hungry now.
C.If they had had breakfast, they wouldn't be hungry now
D.If they had had breakfast, they wouldn't have been hungry now

A.His clothes looked clean and of good quality but they were old and worn.
B.No matter what good quality his clothes had, they looked old and worn.
C.His clothes, though old and worn, looked clean and of good quality.
D.He was fond of wearing such old and worn clothes because they were of good quality.