问题
多项选择题
金属丝蟠扎时，操作正确的选项是（）
A、金属丝的长度应为所要蟠扎的主干长度的2倍左右
B、金属丝缠绕时，为控制缠绕密度，应与树干成45度角
C、缠绕时，要由上向下，由细而粗的顺序D：金属丝解除时，应自上而下，自外向里，小心操作勿伤枝叶
E、如果枝干较粗金属丝较细时，可采用双丝缠绕
答案
参考答案：B, D, E
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金属丝蟠扎时，操作正确的选项是（）
A、金属丝的长度应为所要蟠扎的主干长度的2倍左右
B、金属丝缠绕时，为控制缠绕密度，应与树干成45度角
C、缠绕时，要由上向下，由细而粗的顺序D：金属丝解除时，应自上而下，自外向里，小心操作勿伤枝叶
E、如果枝干较粗金属丝较细时，可采用双丝缠绕
参考答案：B, D, E
Sally is 96 years old. She has no sons or daughters. Her husband fifteen years ago. But she didn’t move into a nursing home. She would like to herself every day. Every night she spends two hours kids with their maths for twenty years. All kids living on her street can get her help without payment（付费）. She was a famous before she retired from a middle school. She gets up early in the morning, then does sports, goes shopping or helps cleaners the street. And she does these happily. When the kids come for help, she is always and tries her best to help them. People asked her . She said, “ I love it, it makes me happy to help them.” She is always happy every day and always says hello to people around her a smile. “I’ve decided to love everything around me. So I’m happy to do . I’m thankful for those kids who come to me for help. Each kid is a for me. I love each day to help them.” She said. Really, a good decision decides what a person does in life.
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