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SCIENTISTS ARE LOOKING FOR AN ... WAY TO REDUCE EN...
SCIENTISTS ARE LOOKING FOR AN ... WAY TO REDUCE ENERGY CONSUMPTION...
TRAC NGHIEM ANH 9 HKII 2
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Đáp án tham khảo
30. Scientists are looking for an ... way to reduce energy consumption.
A. effect
B. effection
C. effective
D. effectively
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30.
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TRAC NGHIEM ANH 9 HKII 2