【单选题】Occasionally, a sequence of fossil-rich layers of rock permits a comprehensive look at one type of organism over a long period of time. For example, Peter Sheldon' s studies of trilobites, a now extin...
A.
They underwent gradual change over a long time period.
B.
They experienced a number of discontinuous transitions during their history.
C.
They remained unchanged during a long period of environmental stability
D.
They evolved in ways that cannot be counted for by either of the two competing theories.
【单选题】You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5. The application contains the following code segment: public class CapabilityEvaluator { public static ...