皮皮学，免费搜题
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搜题
【多选题】
“春蚕到死丝,蜡炬成灰泪始干。”蕴含的力学现象有A.
牵引凝固
B.
爬竿现象
C.
非牛顿流体中的拉丝现象
D.
挤出膨大
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】听力原文：W: Have you heard about the new fitness center they're building on the campus? M: Yeah, I can hardly wait for it to open. Q: What does the man mean? (19)
A.
The center has just opened.
B.
He's looking forward to using the center.
C.
The door to the fitness center is locked.
D.
There are long lines to get into the fitness center.