网校每日一练免费在线测试系统将为所有学员免费提供练习题，所有学员登录成功之后即可免费练习。如有疑问可以到答疑板与专家进行交流，24小时之内即可得到满意答复。欢迎大家积极参与！

阅读理解

Good news for chocoholics:the treat preferred by millions all over the world is good for you,according to American researchers at the University of California.Chocolate contains substances called flavonoids（类黄酮）that can help maintain a healthy heart and good circulation.The researchers have discovered that cocoa acts like aspirin and that eating a bar of chocolate has also been shown to release endorphins in the body:these chemicals help to reduce pain and stress and make you feel happy.

Why is chocolate good for heart and circulation?

A.It reduces pain and stress.

B.It contains substances called flavonoids.

C.It releases endorphins in human body.

D.It acts like aspirin to protect heart.

【正确答案】B

【答案解析】因果关系词=信号词。凡是注释中文的地方可能是答案区域。

编辑推荐：

职称英语考试报考级别类别参照表

历年职称英语考试真题汇总

2015年职称英语考试报考指南

2015年职称英语考试网上辅导火爆热招