问题
单项选择题
厌氧胶是一种(),与空气接触时呈液态,一旦与空气隔绝后,在常温下便固化,即使再接触空气,也不会还原呈液态了。
A、特殊物质
B、一般物质
C、高分子物质
答案
参考答案:C
厌氧胶是一种(),与空气接触时呈液态,一旦与空气隔绝后,在常温下便固化,即使再接触空气,也不会还原呈液态了。
A、特殊物质
B、一般物质
C、高分子物质
参考答案:C
Hello, boys and girls! My name 1 Frank. I am eleven. This is a 2 of my family. This is my father. 3 name is Dale Brown. He is a teacher in my 4 . He teaches English. And that is mother. She is a 5 , too. Who(谁) is this? Oh, he is my 6 —my father’s brother. My grandparents 7 in the photo. 8 are in the USA. That is my dog. 9 name is Dick. I love my 10 and I love my dog, too.
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