问题
填空题
已知复数z=1+2i(i是虚数单位),则|z|=______.
答案
复数z=1+2i(i是虚数单位),则|z|=
=12+22
.5
故答案为:
.5
已知复数z=1+2i(i是虚数单位),则|z|=______.
复数z=1+2i(i是虚数单位),则|z|=
=12+22
.5
故答案为:
.5
Can you or do you wash your clothes? Can you cook meals for yourself when your parents are not at home? 小题1: Today, many young people can’t look after themselves when they leave home. 小题2: I don’t want to be a person like that. I want to be more independent(独立的). When I was only seven years old, I was in the kitchen with my mother enjoying cooking. I always helped her. 小题3: She was really interested in teaching me how to cook. But when my mother got married (结婚), she didn’t know how to cook. My grandmother never allowed her to stay in the kitchen when she was cooking. My mother did not start cooking until she was 25 years old. 小题4: She had to take cooking lessons. So she decided to teach us how to cook because she didn’t want us to have the same experience. 小题5: I always wash my own clothes, and sometimes I wash my parents and my brother’s clothes, too. When my parents are not at home, I can cook meals for my brother and me.
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