30. These materials are used because they can _________ extreme heat. They will not melt when
temperatures rise greatly.
(A) generate
(B) correspond
(C) switch
(D) withstand
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統計: A(45), B(22), C(35), D(177), E(0) #2793249
統計: A(45), B(22), C(35), D(177), E(0) #2793249