It’s 9:00 in the evening. The family are at home. Jim’s father sits in a chair. He’s watching TV(看电视). His mother stands near the window. She feeds(喂) the birds—Polly. Polly says, “Thanks! Thanks!” Where is Jim? Oh, he’s behind the door. Kate is looking for(找) him. They play games in Kate’s room.

多数保暖内衣的里层面料中含有聚酯纤维（COC₆H₄COOCH₂CH₂O）n，下列关于聚酯纤维的叙述正确的是（）