以下对阻性消声器的消声性能影响较小的是哪一项（） A.消声器通道形式 B.消声器外壳

下面是一篇应用文及应用场合的信息,请阅读下列应用文和相关信息,并按照要求匹配信息.
A. English Classes Our English teachers do not follow a fixed lesson for each class. Every class is different because every student is different.
B. Cooking Classes We believe that if you do well in cooking, you will eat better, feel better and live better. Our cooking classes are for you. Our teachers will come to your house and teach you all the skills you need.
C. Driving Classes Cars become more and more popular. Driving skills are necessary for everyone . We promise to make you drive freely in a month.
D. Children’s Dance Classes Children between the ages of 5 and 15 are taught in our classes. Common dance styles for children include ballet and jazz dance.
E. Piano Classes    Piano lessons are for both the beginners and the students who want to review their skills. Learning to play the piano is great for all ages. In the beginning, you will progress rather quickly through our piano lessons.
F. Yoga Classes  Yoga is an ancient method of exercise and personal development for the body and mind. With its gentle movement and deep breathing, it’s a good method of relaxation.
阅读下列人物的个人信息,然后匹配适合他（她）们的培训班。
1.Cathy is an editor. She is always very busy. She wants to relax after work and on weekends.
2.Mary believes that cooking is great. Cooking is a creative art. Like painting, dancing or a perfect tennis serve, cooking can be one of the most fulfilling of outlets for creative energy.
3.Amy is fourteen years old. She believes dance is an expression of the body and is a part of all living things in the universe.
4.Tina likes piano concerts. She studies piano a little when she was young. Her dream is to be a pianist.
5.Linda is a middle school student. She studies very hard and does well in every subject except English. She is looking for a training class to improve her English.

	需培训者	培训班
小题1:	Cathy	A. English Classes
小题2:	Mary	B. Cooking Classes
小题3:	Amy	C. Driving Classes
小题4:	Tina	D. Children’s Dance Classes
小题5:	Linda	E. Piano Classes
		F. Yoga Classes