39. ________ several times, the lab leader then decided to use different approaches. (A)Having failed (B)To fail (C)Failed (D)Had failed

39. ________ several times, the lab leader then decided to use different approaches.
(A)Having failed
(B)To fail
(C)Failed
(D)Had failed

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統計： A(119), B(11), C(27), D(47), E(0) #1015891

詳解 (共 1 筆)

Lin Tzu Hung

B2 · 2019/12/25

#3721778

Because the lab lead...

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47. According to the passage, which of the following is NOT a scientific fact? (A)The more a person sits, the less effective it is to regulate blood glucose level. (B)With two extra hours of sitting, the risk of heart attacks can be increased by a quarter. (C)One of the risk factors for diabetes is extended sitting. (D)Standing all day could increase physical discomfort and lower work efficiency.

39. ________ several times, the lab leader then decided to use different approaches.
(A)Having failed
(B)To fail
(C)Failed
(D)Had failed

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