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【单选题】
某线性表最常用的运算是在尾元素之后插入元素和删除开始元素,则以下存储方式最 节省运算时间的是。A.
单链表
B.
仅有头结点指针的循环单链表
C.
双链表
D.
仅有尾结点指针的循环单链表
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【简答题】下列各项中，属于变质岩所特有的矿物成分的是（ ）。
【单选题】— Daniel is only five years old, but he can draw very well.-How ______ he is!
A.
clever
B.
quick
C.
careful
D.
interesting
【单选题】Sullivan held the world's heavyweight title for______.
A.
twenty-one years
B.
only a year
C.
five years
D.
at least seven years
【单选题】To enter some popular games in Disneyland, the visitors usually need to queue for only five to ten minutes.
A.
Y
B.
N
C.
NG
【单选题】Daniel is the only one of the students in the class that never_____a mistake even when it is pointed out to him.
A.
admit making
B.
admits making
C.
admit to make
D.
admits to make
【单选题】---Could you_____ me this book please, Daniel？ --- Sorry, but I_____ it for only half an hour. I haven’t finished it.
A.
lend; have had
B.
borrow; have bought
C.
borrow; have had
D.
lend; bought
【单选题】下列各项属于变质岩所特有的矿物成分的是( )。
A.
石墨、滑石、绿泥石、绢云母、蛇纹石
B.
石榴子石、兰晶石、黄玉、滑石、石英
C.
绿帘石、绿泥石、绢云母、蛇纹石、白云母
D.
石墨、石榴子石、黑云母、方解石
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