Prep2012-Pack-SC-074 VSC005220
Because of the Sun, which is 400 times larger than the Moon, but also 400 times farther away from Earth, so both the Sun and the Moon have the same apparent size in the sky.
B. The Sun, which is 400 times larger than the Moon, is also 400 times farther away from Earth, so the Sun and the Moon have the same apparent size in the sky.
C. The Sun and the Moon have the same apparent size in the sky because the Sun, which is 400 times larger than the Moon, and also 400 times farther away from Earth.
D. Four hundred times larger than the Moon and 400 times farther away from Earth, the Sun has the same apparent size in the sky as the Moon's.
E. Four hundred times larger than the Moon and also 400 times farther away from Earth, so the Sun in the sky has the same apparent size as the Moon.
The OA is B. But I'm not sure what's the problem with D.
At first, I guess because '400 times farther away from Earth' in D does not have a complete comparison structure(lacking 'than the Moon') ,and the whole sentense in D weakens the causal relationship, so D is incorrect. But when I went back and checked B, finding B also maintains the structure '400 times farther away from Earth' without adding 'than the Moon' after it. Can someone justify this use here?
And in D, is the 'as the Moon's' is wrong? I think it's good here, but not sure.
The last question, I think the two parts of description, 'Four hundred times larger than the Moon' and '400 times farther away from Earth' should be parallel with each other, because they both depict the 2 reasons which make the Sun looks as big as the Moon. But in B, they do not, so B is not ideal, right?
Thanks!