阿摩線上測驗
3. Within a few decades, firms may be meeting earthly demands for precious metals, such as
platinum and gold, and the rare earth elements _______for personal electronics, such as
yttrium and lanthanum.
(A) friendly
(B) ready
(C) suitable
(D) vital
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統計： A(3), B(6), C(35), D(92), E(0) #2081308
統計： A(3), B(6), C(35), D(92), E(0) #2081308
