循环链表的主要优点是( )。A．不再需要头指针了 B．从表中任_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题

循环链表的主要优点是( )。

A．不再需要头指针了

B．从表中任一结点出发都能访问到整个链表

C．在进行插入、删除运算时，能更好的保证链表不断开

D．已知某个结点的位置后，能够容易的找到它的直接前件

答案

参考答案：B

完形填空

完形填空。
     This is a    1   of my bedroom. It's a nice    2   . The door is    3 . And a ball is 4     it.    5
desk is near the window. You can see a 6     behind the desk. You 7     books and flowers 8
it. I 9    my English books in my schoolbag. The bag is now behind    10    chair.

(      )1. A. picture
(      )2. A. classroom
(      )3. A. there over
(      )4. A. in
(      )5. A. Me
(      )6. A. window
(      )7. A. see
(      )8. A. from
(      )9. A. put
(      )10 . A . a

B. book
B. room
B. here
B. on
B. I
B. door
B. can see
B. on
B. colour
B. the

C. map
C. toilet
C. this
C. under
C. My
C. clock
C. must see
C. at
C. find
C. an

D. family
D. home
D. that
D. behind
D. Mine
D. chair
D. look at
D. of
D. put on
D. of

单项选择题

关于颈内静脉，下列说法哪一项不正确（）。

A.是颈部最粗大的静脉干

B.与上腔静脉几乎成一直线

C.以甲状软骨上缘为界将颈内静脉分为上、中、下三段

D.右侧胸膜顶低于左侧，故多选右侧颈内静脉穿刺

E.与颈总动脉距离较远