单选题 We must try our best to protect some of the ______ cultural treasures.
A. rare B. precious C. valuable D. worthy

【正确答案】 B

【答案解析】precious宝贵的；珍贵的，如：precious stones宝石；valuable adj.贵重的，有价值的；worthy值得…的，如：worthy of help值得帮忙的：He is worthy of our praise.他值得我们表扬。