问题 问答题

如图所示是某同学在学习声音时的实验情境,其中图A是研究声音的产生时的实验情境,同样目的实验还有______.

答案

A、用力敲打鼓面,纸屑跳动,说明物体发声时振动.

B、扬声器发声时纸片跳动,说明物体发声时振动.

C、抽去密封瓶内的空气,手机铃声明显减小,说明声音传播需要介质.

D、发声的音叉接触水面,水花四溅,说明物体发声时振动.

故选BD

阅读理解

When you want to go shopping, you’d better decide how much money you can spend on new clothes.

Think about the kind of clothes you really need. Then look for those clothes you really need. Then look for those clothes on sale.

There are labels(标签) inside all new clothes. The labels tell you how to take care of your clothes. The label for a shirt may tell you to wash it in warm water. A sweater label may tell you to wash in cold water. The label on a coat may say “dry clean only”, for washing may ruin this coat. If you do as the directions(说明) on the label, you can keep your clothes looking their best for a long time.

Many clothes today must be dry cleaned. Dry cleaning is expensive. When buying new clothes, check to see if they will need to be dry cleaned. You will save money if you buy clothes that can be washed.

You can save money if you buy clothes that are well done. Well-made clothes last longer. They look good even after they have been washed many times. Clothes that cost more money are not necessarily(不一定) better made. They do not always fit better. Sometimes less expensive clothes look and fit better than more expensive clothes.

小题1:The label inside the clothes tell you           

      

A.how to keep them looking their best.

B.how to save money.

C.whether they fit you or not.

D.where to get them dry cleaned.小题2:If you want to save money, you had better buy clothes that__________.

A.don’t fit you

B.don’t last long

C.need to be dry cleaned

D.can be wash小题3:We learn from the passage that cheaper clothes         

A.are always worse made

B.must be dry cleaned

C.can not be washed

D.can sometimes fit you better小题4:Give the best title(标题)for this passage.

A.Buy Less Expensive Clothes

B.Taking Enough Money When Shopping

C.Being a Clever Clothes Shopper

D.Choosing the Label inside New Clothes

判断题