请教一下关于from when的用法

sonfeo

19. GWD21-Q19:
Regardless of their form or function, all aerodynamicallyenhanced, curved objects made for throwing have been called boomerangs bynon-Australians even since 1788, whenEuropeans saw Dharug-speaking men tossing “bumariny” in the area later known asSydney.
A.                  Regardless of their form orfunction, all aerodynamically enhanced, curved objects made for throwing havebeen called boomerangs by non-Australians ever since 1788,
B.                  Regardless of their form orfunction, any aerodynamically enhanced, curved object made for throwing hasbeen called a boomerang by non-Australians ever since 1788,
C.                  Ever since 1788, non-Australianshave called all aerodynamically enhanced, curved objects made for throwingboomerangs, regardless of their form or function, from
D.                  Ever since 1788, anyaerodynamically enhanced, curved object made for throwing has been called aboomerang by non-Australians, regardless of its form or function, from
E.                   Non-Australians have called allaerodynamically enhanced, curved objects made for throwing boomerangs eversince 1788, regardless of their form or function, from

这道题解释中说C D E选项中有from when，就直接排除了

还有
Between 1990 and 2000the global economy grew more than it did during the 10,000 years from the beginningof agricultureto 1950.
A.    Between 1990 and 2000 the global economy grew more than it did duringthe 10,000 years from the beginning of agriculture

B.    Between 1990 and 2000 the growth of the global economy was more thanthat during 10,000 years, from when agriculture began
C.    The growth of the global economy between 1990 and 2000 exceeds thatwhich had been for 10,000 years from the beginning of agriculture
D.     The growth of the globaleconomy between 1990 and 2000 exceeds what it has been for 10,000 years, fromwhen agriculture began         (A)
E.    The growth of the global economy between 1990 and 2000 exceeded what itdid for the 10,000 years from the beginning of agriculture

prep08 里中解释B选项，说有一种未被证实的说法是from when是 akward的

请问一下from when是不是真的是akward的，一看到就要排除啊？

sonfeo

求助啊= =