正确答案: C

人生在世，不仅要做好事而不做坏事，而且好事要自然而然地去做，千万不能是有意而为之。

题目：下列句子中，没有语病的一项是 （　　）

解析：本题考查辨识病句的能力。A项意思反了，应删去“忘记”；B项应将 “不但”放在“牛体”前；D项删去“是……的重要途径”，并在“而”后加“是”。

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学习资料的答案和解析：

[单选题]It is a small country, yet has a lot of________ resources．

potential

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。

[单选题]The 19th Winter Games, held in Salt Lake City,________ an Olympic tradition which goes back almost 3,000 years．

are part of

解析：Part of前不加定冠词，排除选项A和B。主语games是复数，谓语动词应用复数形式。选项D是正确的。【句子大意】在盐湖城举办的第19届冬季奥运会的项目是奥林匹克传统的一部分，这一传统可追溯到3 000年前。

[单选题]Which of the following shows that a person is NOT dreaming in his sleep?

根据以下内容，回答下面的题目。Researchers have found that REM (rapid eye movement) sleep is important to human beings．This type of sleep generally occurs four or five times during one night of sleep lasting five minutes to forty minutes for each occurrence．The deeper a person’s sleep becomes, the longer the periods of rapid eye movement．There are physical charges in the body to show that a person has changed from NREM (non-rapid eye movement) to REM sleep．Breathing becomes faster, the heart rate increases, and, as the name implies, the eyes begin to move quickly．Accompanying these physical changes in the body is a very important characteristic of REM sleep．It is during REM sleep that a person dreams．According to the passage, how often does REM sleep occur in one night?

His heart rate increases．

[单选题]下列词语中加点的字，读音全都相同的一组是(　　)

摩护 螳臂当车 凋敝 筚路蓝缕

[单选题]________at his model plane over the weekend，he didn’t complete it．

Hard as he worked

[多选题]膝关节（　　）

属于滑车关节

关节囊广阔、松弛