第一节(共15小题；每小题2分，满分30分)
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Signing up for a digital TV service provides you with access to over 200 channels from all over the globe. However, television today is dominated by adult language, making it hard for concerned families to find channels suitable for young eyes. Therefore, most movie channels are automatically removed from the list of TV channels for an entire family. The following are some good ones based on popularity on a global scale.
Discovery Channel
Discovery and its many channels can be considered as the founding father of informative channels on television. What National Geographic does in a scholastic (学术的) manner, Discovery tries to do in an entertaining manner — educating the masses about everything.
