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【单选题】
能全部吸收辐射能的物体,称为( )。A.
黑体
B.
镜体
C.
透热体
D.
灰体
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【简答题】We need to improve the quality of education so that our children will not leave school in literary and reasoning skills. In a society governed by the rule of law, every citizen is subject to possible ...
【简答题】完形填空 Marc sat next to me when we were in Hill Junior School. He had a serious 1 in communicating with people. One always had to guess what he was saying. 2 , most of my classmates did not like t...
【简答题】完形填空。 One day,my mom took me to do school shopping. We went to the center of the city.I asked my mother for Adidas,but she 1 me Zips,some clothes from old time. I said,' Mom,let's put these clothes ba...
【单选题】龋病的定义是
A.
牙齿在多种因素的影响下，其组织发生的一种慢性进行性破坏性疾病
B.
在多种生物因素的共同作用下，牙齿硬组织发生急性严重性破坏的一种病
C.
在以细菌为主的多种因素影响下，牙齿硬组织发生慢性进行性破坏的疾病
D.
在多种内在因素影响下，牙齿硬组织发生慢性进行性破坏的一种疾病
【简答题】Today we were organized for a short trip to the West Hill. We set out by the school bus at 7:30 a.m. The weather was pleasure and every one of us was excited. After two hour’s ride, we arrived there...
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