Some scientists, (65) ________, believe that even if we stopped releasing carbon dioxide and other gases into the atmosphere tomorrow, we would have to wait several hundred years to notice th

Some scientists, (65) ________, believe that even if we stopped releasing carbon dioxide and other gases into the atmosphere tomorrow, we would have to wait several hundred years to notice the results.
A. because
B. however
C. despite
D. although

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Chọn B

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