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阅读理解。 Hi, everyone, Look at this photo. He is my pet dog. His name is Eddie. Eddie is four years old. He has short, yellow fur and a long tail. He is fat. He is very friendly. Eddie lives with my family in our flat. He comes from a pet shop. There are lots of baby dogs in the pet shop. We call baby dogs puppies. Eddie is a lazy dog. He loves eating and sleeping. Eddie says'woof'to tell me he is hungry. Eddie is my best friend. Every day I feed him and play with him. I love Eddie very much. 1. Eddie is a _____. A. a puppy B. four years old C. in Grade 7 D. a cat. 2. Eddie has _____. A. 1ong yellow fur and a long tail B. long yellow fur and a short tail C. short yellow fur and a short tail D. yellow fur and a long tail 3. Baby dogs are called _____. A. kittens B. piggies C. puppies D. pets 4. Eddie says'Woof'to tell Millie he is _____. A. tired B. angry C. hungry D. happy 5. Eddie loves ____. A. eating and sleeping B. eating and playing C. playing and sleeping D. sleeping and singing
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【简答题】在关系模式R中,如果X→Y,且对于x的任意真子集X,都有X Y,则称Y对 X_____函数依赖。
【单选题】行驶时( )排放量最多( )排放量最少。
A.
NOx„„HC
B.
NOx„„CO2
C.
HC„„CO
D.
CO„„HC
【单选题】当三极管的发射结和集电结都处于正偏,集电极电流不再受基极电流控制时,三极管处于( )状态。
A.
截止
B.
放大
C.
饱和
D.
临界
【简答题】在关系模式R 中,对于∪的子集X和Y如果X→Y,且 则称Y对X的依赖为( )。 A)非平凡的函数依赖 B)完全函数依赖 C)传递函数依赖 D)部分函数依赖
【单选题】行驶时()排放量最多,()排放量最少
A.
NOx……HC
B.
NOx……CO
C.
HC……CO
D.
CO……HC
【简答题】人类从哪里来?我们每一个人又是怎样来到这个世界的呢?以下是“人的由来”的相关概念图,请根据图中提示回答有关问题. (1)在A、B两处填入恰当的词:A______,B______. (2)B的形成发生在______内.胎儿是在母体的______中发育,并通过______与母体进行物质交换,从母体获得营养和氧气,同时通过母体将二氧化碳等废物排出. (3)图中C所代表的生理过程是______. (4)人...
【简答题】在关系模式R á U, F ñ 中,如果X®Y,且存在X的一个真子集X′,有X′®Y ,则称Y对X的依赖为 ( ) 函数依赖。
【多选题】MME的功能包括()
A.
鉴权
B.
寻呼管理
C.
EPS承载控制
D.
UEIP地址的分配
【判断题】北宋以后,自从徽州土著越文化完全被中原汉文化所同化,中原士族反客为主,成为徽州的主姓、大姓,徽州的土著居民也被中原士族所吸纳和消化,不显不彰,完全消失了。()
A.
正确
B.
错误
【判断题】对量的比较是通过两个(或两个以上)不同量的物体的比较来认识的
A.
正确
B.
错误
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