8.The author’s neighbors ask her to look after their kids mainly because 　. 

　　A.they know she is a helpful lady

　　B.they know she is well-educated

　　C.they think she doesn’t have a job

　　D.they think she is popular with kids

　　答案:C

　　解析:推理判断题。由倒数第二段中的“Some people might assume that we are too lazy to find a job.I don’t think my neighbors understand it...”可推断,邻居们让作者照顾孩子是因为他们以为作者是因为没有工作才住在父母的家里。

　　Ⅱ.七选五

　　Don’t scratch that itch!

　　Got an itch(痒)?1.　 Scratching an itch can make it worse and now scientists know why.Researchers at Washington University School of Medicine in St.Louis have discovered that scratching causes the brain to produce a chemical called serotonin(血清素),which makes the itching more intense(强烈的). 

　　Scientists have long known that scratching causes a mild sensation(感知) of pain in your skin.2.　 Yet pain signals that travel to your brain relieve the itching only temporarily.The problem,says researcher Zhou-Feng Chen,is that when the brain receives those pain signals,it produces serotonin to help control the pain.When serotonin travels along the spinal cord(脊髓),it can“jump tracks,”moving from pain-sensing nerve cells to those that influence itch intensity.3. 

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