多项选择题

下列哪项符合脐血中的造血干／祖细胞（）

A．CD34+细胞占有核细胞百分数的0．5％～1．5％
B．CD34+细胞占有核细胞百分数的0．05％～0．15％
C．CD34+细胞占有核细胞百分数的0．1％
D．CD34+细胞有12％～13％的细胞处在S／G2M期
E．脐血是造血干／祖细胞丰富的来源

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听力原文：W: This is a beautiful park. Shall we come again tomorrow?M: Don't we have to go shopping?W: We can do that in the afternoon, and come here in the morning.M: OK. And let's bring Hilda and Julia with us.Where are they going to do tomorrow afternoon?A．They are going shopping.B．They are going to the park.C．They are going to the cinema with their children.

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听力原文：M: Where've you been all this time? The train's about to leave!W: I'm sorry I'm late, but I was waiting for you at the in formation desk. It's lucky I've found you here on the platform.Where did the woman think they were supposed to meet?A．On the train.B．On the platform.C．At the information desk.

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B．On
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