单选题
单选题
A:They will be judged by more than one person B:Money will be given away to the winners C:Winners will get a chance to go away next summer D:The winning pieces will be presented in an art museum
Leave the next two lines （）for the tutor’s comments.
A:blank B:to beto be blank C:being blank D:be blank
In the 1960s, Peru’s sugar industry was among the most efficient in the world. It was all downhill thereafter. A military government expropriated the sugar estates on the country’ s north coast, turning them into government-owned co-operatives. Having peaked at 1m tonnes in 1975, output fell to 400,000 tonnes by the early 1990s. But since then the sugar industry has passed into private hands again. Over the past decade production has returned to its historic peak—and is now set to boom.
The change has been gradual. The government has sold its stake in the industry in tranches. But now investors are piling in. As in other parts of South and Central America they are attracted by higher prices for sugar because of its use for ethanol. Industry sources predict that land under sugar will expand by 10,000 hectares (25,000 acres) a year, more than doubling output over the next decade. That would turn Peru into an exporter—though not on the scale of Brazil or Colombia.
Last year, local investors secured a controlling stake in Casa Grande, the largest sugar plantation. Bioterra, a Spanish company, plans a $ 90m ethanol plant nearby. Maple, a Texas company, has bought 10,600 hectares of land in the northern department of Piura. Its plans call for an investment of $120m and ethanol production of 120m litres a year. Brazilian and Ecuadorean investors are also active.
Part of the attraction is that Peru has signed a free-trade agreement with the United States. Provided that it can satisfy the concerns of the new Democratic-controlled Congress in Washington D. C., about the enforcement of labour rights, this agreement should be approved later this year. It would render permanent existing trade preferences under which ethanol from Peru can enter the United States dutyfree. By contrast, ethanol exported from Brazil, the world’s biggest producer, must pay a tariff of 54 cents a gallon.
Two harsh realities might sour these sweet dreams. Colombia, Central America and the Dominican Republic all enjoy similar preferences and have similar plans. Colombia already produces 360m litres a year of ethanol, much of it for export. The second question is whether sugar—a thirsty crop—is the best use of Peru’s desert coastal strip, with its precarious water supply. One of the country’s achievements of the past decade has been the private sector’s development of new export crops. It would be ironic if these businesses were threatened by sugar’s privatisation.
Base on the second paragraph, we can learn that______.
A:the investors are not so interested in buying the stake B:the ethanol sources attract a lot of investors C:the land under sugar expand by 2.5 times of last year D:Peru’s export on sugar is next to that of Brazil and Colombia
在双向循环链表中，在P所指的结点之后插入S指针所指的结点，其操作是( )。
A:p—＞next=s；s—＞prior=p；p—＞next—＞prior=s；s—＞next=p—＞next； B:s—＞prior=p；s—＞next=p—＞next；p—＞next=s；P—＞next—＞prior=s： C:p—＞next=s；p—＞next—＞prior=s；s—＞prior=p；s—＞next=p—＞next； D:s—＞prior=p；s—＞next=p—＞next；p—＞next—＞prior=s；p—＞next=s：
Passage Three
Mr. Smith gave his wife ten pound for her birthday--ten pretty pound notes. So the day after her birthday, Mrs Smith went shopping. She queued for a bus, got on and sat down next to an old lady. After a while, she noticed that the old lady’s handbag was open. Inside it she saw a wad of pound notes exactly like the one her husband had given her. So she quickly looked into her own bag--the notes were gone! Mrs Smith was sure that the old lady who was sitting next to her had stolen them. She thought she would have to call the police; but, as she disliked making a fuss and getting people into trouble, she decide to take back the money from the old lady’s handbag and say nothing more about it. She looked round the bus to make sure nobody was watching, then she carefully put her hand into the old lady’s bag, took the notes and put them in her own bag.
When she got home that evening, she showed her husband the beautiful hat she had bought.
"With the money you gave me for my birthday, of course." she said proudly.
"Oh What’s that, then" he asked, as he pointed to a wad of ten pound notes on the table.
A:besides B:in front of C:next to D:behind
Mr. Smith gave his wife ten pound for her birthday — ten pretty pound notes. So the day after her birthday, Mrs Smith went shopping. She queued for a bus, got on and sat down next to an old lady. After a while, she noticed that the old lady’s handbag was open. Inside it she saw a wad of pound notes exactly like the one her husband had given her. So she quickly looked into her own bag — the notes were gone! Mrs Smith was sure that the old lady who was sitting next to her had stolen them. She thought she would have to call the police; but, as she disliked making a fuss and getting people into trouble, she decide to take back the money from the old lady’s handbag and say nothing more about it. She looked round the bus to make sure nobody was watching, then she carefully put her hand into the old lady’s bag, took the notes and put them in her own bag.
When she got home that evening, she showed her husband the beautiful hat she had bought.
"With the money you gave me for my birthday, of course." She said proudly.
"Oh What’s that, then" he asked, as he pointed to a wad often pound notes on the table.
A:besides B:in front of C:next to D:behind
为计算1+2+22+23+24+…+210的值，并把结果显示在文本框Text1中，若编写如下事件过程： Private Sub Command1 Click（ ） Dim a％，s％，k％ s=1 a=2 For k=2 To 10 a=a*2 s2 s+a Next k Text1．Text=s End Sub 执行此事件过程后发现结果是错误的，为能够得到正确结果，应做的修改是( )。
A:把s=1改为s=0 B:把For k=2 T0 10改为For k=1 T0 10 C:交换语句s=s+a和a=a*2的顺序 D:同时进行B、C两种修改
有以下结构体说明和变量定义，如下图所示，指针p、q、r分别指向一个链表中的三个连续结点。 struct node int data; struct node *next; *p, *q, *r; data next data next data next 
现要将q和r所指结点的先后位置交换，同时要保持链表的连续，以下错误的程序段是（）。
A:r→next=q; q→next=r→next; p→next=r; B:q→next=r→next; p→next=r; r→next=q; C:p→next=r; q→next=r→next; r→next=q; D:q→next=r→next; r→next=q; p→next=r;
向一个栈顶指针为HS的链式栈中插入一个s所指的结点时，则执行
A:HS-＞next=s; B:s→next=HS→next;HS→next=s; C:s-＞next=HS;HS=s; D:s→next=HS;HS=HS→next;
(48)～(50)以下程序的功能足：建立一个带有头结点的甲—向链表，并将存储在数组中的字符依次转存到链表的各个结点中，请从与下划线处号码对应的一组选项中选择出正确的选项。
#include ＜stdlib.h＞
struct node
char data; struct node *next: ;
(48) CreatList(char *s)
struct node *h,*p,*q;
h = (struct node *)malloc sizeof(struct node));
p=q=h;
while(*s! =’/0’)
p = (struct node *)malloc(sizeof (struct node));
p-＞data = (49) ;
q-＞next = p;
q - (50) ;
S++;
p-＞next=’/0’;
return h;
main（ ）
char str[]="link list";
struct node *head;
head = CreatList(str);
A:*s B:s C:*s++ D:(*s)++
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