Unstable crude prices prompted falls in platinum and gold.

Unstable crude prices prompted falls in platinum and gold.
A、steady
B、unsuitable
C、unbearable
D、unsteady
【正确答案】：D
【题目解析】：unstable意为”不稳定地“；steady稳定的；unsuitable不合适的；unbearable难以忍受的；unsteady不稳定的；故选D。