11. A new study suggests that vigorous physical activity may increase the risk for vision loss, a
finding _____ surprised and puzzled researchers.
(A) that has
(B) that have
(C) has
(D) have
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統計: A(90), B(10), C(17), D(2), E(0) #2081366
統計: A(90), B(10), C(17), D(2), E(0) #2081366