阅读理解。

      Are you a musician? Can you sing? Can you dance? Can you play the trumpet? Can you play the guitar? Can you play the violin? Our School Music Festival is September 29th.  We need two musicians to sing. We need three musicians to dance. We need five musicians to play the trumpet. We need four musicians to play the guitar and one to play the piano. Come and join us. You'll have fun.

1. When is the School Music Festival?

lt's _______.

A.September 9th

B.September 29th

C.September 19th

D.December 29th

2. They don't need musicians to _______.

A. play the guitar.

B. play the drums

C. play the trumpet

D. dance .

3. They need _______ musicians to sing.

A. 2

B. 3

C. 5

D. 4

4.From the ad(广告) , we don't know the school's_______.

A. address

B. telephone number

C. e-mail address

D. number of students

5.WhichofthefollowingisRIGHT?

A. Blue Sky School is in Taiyuan

B.The musicians can sign up(报名) on September 25th.

C. They need 15 musicians.

D. The school doesn't have an e-mail address.

现场总线通信方式和模拟通信方式的不同点？