问题 填空题

小明用力吹一根吸管,吸管发出的声音是由______振动产生的.在把吸管不断剪短的过程中,吸管发出声音的音调将______.

答案

小明用力吹一根吸管,吸管中空气柱的振动使吸管发出声音.

不断的剪短吸管,使得吸管内的空气柱逐渐变短,振动变快,振动的频率变大,所以其所发出的音调会变高.

故答案为:空气柱;变高.

阅读理解
B
Found
A white bag with some English books and an ID card in it.
Come to Room 402 in the afternoon.
Call Jim Green at 3411364.
Cleaner Wanted
Can you make a large house clean and tidy? If you want to get $25 at once, call us between 18:00-20:00  Tel: 8228539.
Fashion Show
3:00p.m.-5:00 p.m. every Sunday
Happy Shopping Center
Tel: 7410876
There will be fashion models, beautiful clothes and a surprising show.
Don’t miss it!
Models Wanted
Age: between 16 to 28
Height: from 1.70m to 1.80m
Look: good looking
Apply(申请)to: the Model Center, Shenzhen
Tel: 3334578
根据表格内容,从题中所给的A、B、C、D四个选项中,选择最佳答案。(10分)
小题1:.If you’re an 18-year-old girl and want to become a model, you can call _______.
A.3411364 B.3334578
C.7410876D.8228539
小题2:.If Jane is the owner of the bag, she can go to _______.
A.the Model CenterB.Happy Shopping Center
C.a large houseD.Room 402 in the afternoon
小题3:.You can watch the fashion show _______ this Sunday.
A.in the morningB.in the afternoon
C.in the eveningD.at night
小题4:.If the owner of the large house asks a cleaner to clean his house twice a week, the cleaner will make about ________ a month.
A.$50B.$100
C.$200D.$400
小题5:.Which of the following is NOT true?
A.There is a fashion show every Sunday.
B.If you want to get your lost bag, you can call 3411364.
C.If you want to be a cleaner, you can call 8228539 anytime.
D.If you want to be a model, you must think about your age, height and look.
单项选择题 B1型题