[CR. ] GWD-40
GWD6-40
It is theoretically possible that bacteria developed on Mars early in its
history and that some were carried to Earth by a meteorite. However, strains
of bacteria from different planets would probably have substantial
differences in protein structure that would persist over time, and no two
bacterial strains on Earth are different enough to have arisen on different
planets. So, even if bacteria did arrive on Earth from Mars, they must have
died out.
The argument is most vulnerable to which of the following criticisms?
A It fails to establish whether bacteria actually developed on Mars.
B It fails to establish how likely it is that Martian bacteria were
transported to Earth.
C It fails to consider whether there were means other than meteorites by
which Martian bacteria could have been carried to Earth.
D It fails to consider whether all bacteria now on Earth could have arisen
from transported Martian bacteria.
E It fails to consider whether there could have been strains of bacteria
that originated on Earth and later died out.
Answer: D
我想問的是Ｅ。
依題目，細菌從火星來－－＞死光了。
如果用無因有果解的話，來自地球的細菌（非來自火星，無因）－－＞死光了（有果）
好像也可以削弱，請問是錯在哪裡？
謝謝。
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