30 People should secure large items like cabinets and appliances with simple equipment to ensure stability and prevent ________ during an earthquake.
(A)clapping
(B)topping
(C)shipping
(D)tipping
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統計: A(0), B(2), C(1), D(1), E(0) #3930643
統計: A(0), B(2), C(1), D(1), E(0) #3930643