题目:
完形填空。 | ||||
I'm Jack. I'm 1 American boy. I'm twelve. I'm a student 2 a school. I'm in Class 7, Grade 6. Tom is my good friend. We are in the 3 class. He is twelve, too. It's a picture of 4 family here. 5 look at it. The man behind the chair is his father. The woman in a red hat is his mother. She is a teacher. Tom has 6 sisters. Their names 7 Lucy and Lily. They have a cat. 8 name is Huahua. Now it's 9 the floor under the desk. 10 twin sisters are students, too. They are in the same class. | ||||
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答案:
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参考答案:802.11解析: 第一个无线局域网的标准是1990年IEEE 802委员会建立的802.11标准。