问题 单项选择题

下列关于线性链表的描述中正确的是( )。

A.存储空间不一定连续,且各元素的存储顺序是任意的

B.存储空间不一定连续,且前件元素一定存储在后件元素的前面

C.存储空间必须连续,且各前件元素一定存储在后件元素的前面

D.存储空间必须连续,且各元素的存储顺序是任意的

答案

参考答案:A

解析: 线性表的链式存储结构中的结点空间是动态生成的,它们在内存中的地址可能是连续的,也可能是不连续的。

完形填空

In the summer vacation of 1997 , I was fixed with a job . I worked as a(n)     36   at Mr. Breen’s fruit shop .The fruit shop did    37    business . Most of the trade came from the housewives who lived in the neighbourhood,     38    he also had regular customers who arrived outside the shop in cars . Mr Breen    39    them all by name and they sometimes even had their order already made up , always     40   me to carry it out to their car . They were clearly long-standing customers , and I    41    they must have stayed faithful to him   42     he had promised to sell good quality     43   . He had a way with them —I had to   44     that . He called every woman “madam” for a start ,    45    those who clearly were not, but when he     46   it , it did not sound like flattery (奉承). It just sounded     47   in an old-fashioned way . He was a great chatter     48   . If he did not know them , he would greet them with a few    49    about the weather ,     50   he did , he would ask about their families or make    51    , always cutting his cloth    52    his customers . Whatever their bills came to , be     53   gave them back the few odd pence (零钱), and I am sure they thought he was very generous (慷慨). But I thought he was the opposite . He never    54    anything away . He was always looking for     55   for nothing .

36.A.operator        B.assistant      C.waiter              D.secretary

37.A.good           B.poor        C.big                 D.usual

38.A.so                 B.when          C.therefore          D.but

39.A.sold           B.knew          C.gave          D.sent

40.A.making        B.letting       C.getting             D.keeping

41.A.wish          B.insist         C.declare        D.suppose

42.A.when         B.if              C.because            D.though

43.A.food          B.fruit            C.vegetables   D.drink

44.A.admit         B.expect         C.announce   D.promise

45.A.yet            B.only            C.just                D.even

46.A.told           B.said                C.spoke        D.talked

47.A.serious          B.strange        C.polite             D.familiar

48.A.as well          B.as usual     C.either             D.also

49.A.sayings          B.questions   C.words        D.speeches

50.A.and then        B.and so       C.even if            D.but if

51.A.preparations   B.jokes           C.repairs       D.friends

52.A.according to   B.due to                C.instead of  D.up to

53.A.never           B.ever            C.seldom             D.always

54.A.took          B.moved       C.threw       D.turned .

55.A.something      B.anything      C.somebody  D.anybody

单项选择题