【单选题】What distinguishes the end-Permian mass extinction from other similar devastations?
A.
Change of ocean chemistry.
B.
Survival of Miocidaris.
D.
Ecological reorganization.
【单选题】What distinguishes an extended example from other types of examples?
C.
It is given in passing.
D.
It provides more details.
【单选题】What distinguishes Chinese calligraphy from other calligraphic arts?
C.
the nature of Chinese characters
D.
the elasticity of the paper
【单选题】What distinguishes a hypothetical example from other types of examples?
A.
It is a specific instance.
B.
It describes an imaginary situation.
C.
It is emotionally appealing.
D.
It is a story or anecdote.
【单选题】According to the professor, what distinguishes Jackson Pollock's work?
A.
The method he used for applying paint to a canvas.
B.
The location where he did his work.
C.
The widespread popularity of his style of art.
D.
The size of the paintings he produced.
【单选题】What distinguishes stem cells from other cell types?
A.
Although all cell types can divide, only stem cells differentiate after division.
B.
Stem cells are able to divide to produce populations of cells that differentiate into a related set of cells.
C.
Stem cells divide asymmetrically to give rise to one daughter cell that remains a stem cell, and a second daughter cell that differentiates into one or more cell types.
D.
Stem cells have a special type of cell division in which they form small stems that then pinch off to give rise to the daughter cell.