正确答案: A

potential

题目：It is a small country, yet has a lot of________ resources．

解析：Potential潜在的，unknown不可知的，secret秘密的，unlimited无限制的。根据题干，选项A是正确的。【句子大意】这个国家很小，但它潜在的能源却很丰富。

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学习资料的答案和解析：

[单选题]李煜是一个（　　）

五代词人

[单选题]_________

根据以下内容，回答下面的题目。Insure means to protect _51_ a loss of money．Most people can budget their money so that their income will cover expected expenses _52_ food, clothing, housing, and public services．But, there is no way to know _53_ who will suffer a crisis (危机) such as a serious illness, fire, flood, or a car accident．Such crises usually _54_ great expense．Even if people could predict crises, it would be hard to save enough money to _55_ the expenses．Insurance is a system _56_ a company collects money from many individuals and then pays certain expenses whenever one of those insured individuals is faced with a certain crisis．An insurance policy _57_ how much the insurance costs and how much the company will pay when a policy holder is faced with a certain crisis．There are many different kinds of insurance, _58_ hospital, motor-car and fire．Insurance can be rather expensive but most people buy insurance of some kinD．Insurance is something _59_ people buy and hope they will _60_ need．_________

cover

[单选题]在心室等容收缩期时 （　　）

房内压<室内压<主动脉压

[单选题]女性正常排卵的黄体（　　）

分泌孕酮及雌激素