This kind of plant is ______  to the changes of the temperature. So you should keep it from freezing.  
A．a(chǎn)vailable B．valuable C．sensitiveD．creative
C
考查詞義辨析。available 可得到的，valuable 有價值的，sensitive 敏感的，creative創(chuàng)造性的，句意：這種植物對氣溫變化非常敏感，因此你應該組織它凍僵。所以選C。
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