问题 填空题

下图所示是小明所做的一个听声的实验,他将衣架悬空挂在细绳的中央,请 小华用钢笔轻轻敲打衣架,使声音通过________传入他的耳朵,接着,小明将 细绳绕在手指上,再用此手指堵住双耳来听敲打衣架的声音,通过比较发现, 固体传声的本领比空气_________(填“强”或“弱”).

答案

空气;强

阅读理解

Have you ever stayed up late? If so, you know that not getting enough sleep can leave you tired and grumpy . Not sleeping enough can also make it harder to think clearly the next day.

Sleep experts have long known that getting a good night’s sleep is important.

It helps kids perform their best during the day. A recent study shows that sleep helps improve problem--- solving skills and creative thinking.

For the study, two groups of volunteers answered a math problem. The group that slept for eight hours solved the problem correctly more often than the group that did not get enough sleep.

While you sleep, your brain is busy doing its “homework”. It sorts out information from your day. Getting enough sleep each night can boost your brainpower. That will help you do your best in school. Experts say that, in return, can lead to better grades.

小题1:What is the best title for the passage?

A.Too Much Sleep

B.It’s Homework Time

C.Sleep to Succeed

D.Math Problems小题2:The underlined word “boost” in paragraph 5 means ________.

A.reduce

B.improve

C.disturb

D.worsen小题3:Why is sleep important?

A.It can improve problem-solving skills and creative thinking

B.It will help you do your best in school

C.It helps your brain sort out information from your day.

D.All of the above小题4: What did the results of a recent sleep study show?

A.People who sleep enough are good at math

B.Sleep is important for learning

C.If you get enough sleep, you don’t have to do your homework

D.Adults need more sleep than kids

单项选择题