A、is belonging
B、belong
C、belongs
D、are belonged
第1题：
现有：
classTree{
privatestaticStringtree="tree"；
StringgetTree（）{returntree；}
}
classElmextendsTree{
privatestaticStringtree="elm"；
publicstaticvoidmain（String[]args）{
newElm（）.go（newTree（））；
}
}
voidgo（Treet）{
Strings=t.getTree（）+Elm.tree+tree+（newElm（）.getTree（））；
System.out.println（s）；}
结果为：（）
第2题：
第3题：
Our school has a big library.It has many books on different subjects. Students can read books and newspapers in the __21__ room. They can also borrow books from the library. But they the desk when Amy hurried in. She told Miss Susan that she couldn't find the library book " Harry Potter "__24__. At that moment, Lucy came into the library with Amy's book. She found it in the classroom. Amy was very __25__. She thanked Lucy and said that she would be more careful from then on.
21.
A.reading
B.return
C.happy
D.anywhere
E.kind
22.
A.reading
B.return
C.happy
D.anywhere
E.kind
23.
A.reading
B.return
C.happy
D.anywhere
E.kind
24.
A.reading
B.return
C.happy
D.anywhere
E.kind
25.
A.reading
B.return
C.happy
D.anywhere
E.kind
第4题：
1、tree.add（6); tree.add（1); tree.add（1); 则遍历树集tree之后，可以输出1,1,6。（）
第5题：
pandas中也有专门针对数据框x的绘图函数pandas.DataFrame.plot（)，如绘制条形图的是_______。
A．import pandas as pd x.plot(kind='pie',ax=axes[0])
B．import pandas as pd x.plot(kind='boxplot',ax=axes[0])
C．import pandas as pd x.plot(kind='scatter',ax=axes[0])
D．import pandas as pd x.plot(kind='bar',ax=axes[0])
第6题：
A.multipart-to-multipointEVC（E-LAN）
B.hubspokeEVC（E-Tree）
C.pointtopointEVC（E-Line）
D.rootedmultipointEVC（E-Tree）
E.point-to-multipointEVC（E-Tree）
第7题：
第8题：
A.barh
B.bar
C.hist
D.line
第9题：
tree.add（6); tree.add（1); tree.add（1); 则遍历树集tree之后，可以输出1,1,6。（）
第10题：
She is a l________ （本地的，当地的）girl.