下列属于媒介机构的是（）。
A.公司
B.电视
C.报纸
D.以上都不是
参考答案：A
Read and write. （根据所给图片提示，把短文补充完整）
Look, this is my family. My father is a 1.________My grandpa is a 2.________
My mother is a 3.________.And I am a 4.________player. We are very happy.
应用球囊扩张术治疗贲门失弛缓症时选用球囊的直径是（）
A.2cm
B.2.5cm
C.3～4cm
D.4cm以上
E.以上均可
My grandpa is a 2.________
.And I am a 4.________
player. We are very happy.