TOEFL Structure Explanations
All questions and explanation were written by Erin Billy and are copyright Erin Billy.
Original TestMagic Question
225. According to all findings to date, the known universe consists almost entirely of the hydrogen.
D is the best answer. We should change the hydrogen to hydrogen. In other words, get rid of the!!
TestMagic Explanation
This is one of the most commonly missed questions on the TOEFL.
Do not use the with the names of the elements.
And that's it. 
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