41. The passage is mainly about _____
(A) the shortage of fossil fuel.
(B) the problems that energy researchers are facing.
(C) solar energy.
(D) inexpensive energy sources.

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統計： A(2), B(4), C(5), D(0), E(0) #2337116

詳解 (共 3 筆)

#5154308
Because of the energ...
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#5154334
The passage is mainl...
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#5154335
Because of the energ...
(共 174 字，隱藏中）
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