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【多选题】
下列关于融合牙的说法,正确的是:( )A.
由两个正常牙胚融合而成
B.
一般认为是压力所致
C.
牙本质是相通的
D.
有一个共同的牙根和根管
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举一反三
【单选题】I won lots of money. I gave some to my parents and the rest to charity. [ ]
A.
gave
B.
is given
C.
were given
D.
was given
【简答题】B Kong Linghui I was the only child in my family. And my parents gave me the best of everything. I went to the best schools. My parents wanted me to have the best, but I still had to help out over the...
【单选题】My parents gave me a ______ watch for my birthday.
A.
gold French modem
B.
modem French gold
C.
French gold modem
D.
French modem gold
【单选题】The first visit to the Great Wall with my parents gave me a deep_______.
A.
effect
B.
impression
C.
encouragement
D.
satisfaction
【单选题】对如下有向带权图,若采用迪杰斯特拉(Dijkstra)算法求从源点a到其他各顶点的最短路径,则得到的第一条最短路径的目标顶点是b,第二条最短路径的目标顶点是c,后续得到的其余各最短路径的目标顶点依次是( )。
A.
d．e．f
B.
e，d，f
C.
f，d，e
D.
f，e，d
【单选题】对如下有向带权图，若采用迪杰斯特拉(Dijkstra)算法求从源点a到其他各顶点的最短路径，则得到的第一条最短路径的目标顶点是b，第二条最短路径的目标顶点是c，后续得到的其余各最短路径的目标顶点依次是（ ）【图片】
A.
d,e,f
B.
e,d,f
C.
f,d,e
D.
f,e,d
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