题目内容
After a good 2003, will 2004 be betterThe past year has been a good one for Southeast Asian stocks. Markets in both Singapore and the Philippines have risen by more than 30% in dollar terms; Indonesia has surged more than 70%; and tigerish Thailand has leapt by almost 130%. Investors, needless to say, are keen to know whether lightning will strike again in the same places in 2004. There is indeed something good in store: elections.The gains of the past year are easy to explain. Indonesia, for one, has finally found its feet after years of chaos following the regional crisis in 1997. Inflation and interest rates are failing, and the economy has grown by around 4% in the past year.Thailand’s economy, meanwhile, has been doing even better. It has grown at an annual rate of 6.5% in the year as a whole. Because of low interest rates, consumers have been wildly purchasing cars and houses, helping crisis-hit companies pay off their debts and thus improving the balance sheets of Thailand’s struggling banks.Analysts tell similar tales of asset increase all around the region. Markus Rosgen, of ING, a Dutch bank, notes that Asians have been piling up deposits in their bank accounts since the crisis. With interest rates so low, he argues, they now have an incentive either to consume more or to put their savings into more lucrative investments. Either way, share prices should rise. Even now, ail Southeast Asian markets are still well below their pre-crisis highs. Moreover, points out Christopher Wood of CLSA, an investment bank, all Southeast Asian markets except Singapore serve as useful hedges against America, since they do not rise and fall with Wall Street.Unexpected events might yet upset these rosy prospects. There will be elections in the Philippines and Indonesia in 2004, and probably in Malaysia, too. Thailand goes to the polls at the beginning of 2005. Economically corrupted governments, street protests or bombing campaigns are always a possibility. But the responsible leaders seem likely to get re-elected in all four countries. Furthermore, they will spend a lot of money in the process, out of both the state budget and their own pockets, giving their economies a further boost. As a recent report by ING points out, Indonesian stocks rose in the nm-up to all of the past three elections. What has happened in Indonesia in the past year（）
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Many students find the experience of attending university lectures to be a confusing and frustrating experience. The lecturer speaks for one or two hours, perhaps (61) the talk with slides, writing up important information on the blackboard, (62) reading material and giving out (63) The new student sees the other students continuously writing on notebooks and (64) what to write. Very often the student leaves the lecture (65) notes which do not catch the main points and (66) become hard even for the students to understand. Most institutions provide courses which (67) new students to develop the skills they need to be (68) listeners and note-takers. (69) these are unavailable, there are many useful study-skills guides which (70) learners to practice these skills independently. In all cases it is important to (71) the problem before actually starting your studies. It is important to (72) that most students have difficulty in acquiring the language skills (73) in college study. One way of (74) these difficulties is to attend the language and study-skills classes which most institutions provide throughout the (75) year. Another basic strategy is to find a study partner with whom it is possible to identify difficulties, exchange ideas and provide support.
设向量α=(a1，a2，…，an)T，β=(b1，b2，…，bn)T都是非零向量，且满足条件αTβ=0．记n阶矩阵A=αβT．求： (1) A2; (2) 矩阵A的特征值和特征向量．
Many students find the experience of attending university lectures to be a confusing and frustrating experience. The lecturer speaks for one or two hours, perhaps (61) the talk with slides, writing up important information on the blackboard, (62) reading material and giving out (63) The new student sees the other students continuously writing on notebooks and (64) what to write. Very often the student leaves the lecture (65) notes which do not catch the main points and (66) become hard even for the students to understand. Most institutions provide courses which (67) new students to develop the skills they need to be (68) listeners and note-takers. (69) these are unavailable, there are many useful study-skills guides which (70) learners to practice these skills independently. In all cases it is important to (71) the problem before actually starting your studies. It is important to (72) that most students have difficulty in acquiring the language skills (73) in college study. One way of (74) these difficulties is to attend the language and study-skills classes which most institutions provide throughout the (75) year. Another basic strategy is to find a study partner with whom it is possible to identify difficulties, exchange ideas and provide support.
【说明】 以下是客户机/服务器模型中的一个简单的客户机程序(服务器程序略)，其工作过程非常简单：客户机与服务器建立连接后，接收服务器向客户机返回的一条消息。 程序中用到了两种结构hostent与sockaddr_in: hostent类型的结构定义 struct hostent { char*h_name; //主机名称 char**h_aliases; //别名列表 int h_addrtype; //主机地址类型: AF_XXX int H_length; //主机地址长度: 32位 char**h_addr_list; //主机IP地址列表 } #define h_addr h_addr_list[0] sockaddr_in类型的结构定义，sockaddr_in是通用套接字结构sockaddr在TCP/IP协议下的结构重定义，为TCP/IP套接字地址结构。 Struct sockaddrin { short int sin_family;//地址类型AF_XXX，其中AF_INET为TCP/IP专用 unsigned short int sin_port; //端口号 struct in_addrsin_addr; //Internet地址 //端口号以及Internet地址使用的是网络字节顺序，需要通过函数htons转换 } struct iN_addr { _u32 s_addr; //类型为unsignel_long } 程序中使用到了多个函数： struct hostent * gethostbyname( const char*hostname ); 函数gethostbyname查询指定的域名地址对应的IP地址，返回一个hostent结构的指针，如果不成功返回NULL。 int_socket(int domain, int_type, int protocol); 函数socket创建一个套接字描述符，如果失败返回-1。domain为地址类型，type为套接字类型，本题中为SOCK_STREAM; protocol指定协议，本题中为0。 int connect( int sockfd, struct sockaddr*servaddr, int addrlen); 函数connect与服务器建立一个连接，成功返回0，失败返回-1。servaddr为远程服务器的套接字地址，包括服务器的IP地址和端口号；addrlen为地址的长度。 int read( int fd, char*buf, int len); int write( int fd, char*buf, int len); 函数read和write从套接字读和写数据，成功返回数据量大小，否则返回-1。buf指定数据缓冲区，len指定接收或发送的数据量大小。 【socket程序】 #define PORT4490 //定义端口号为4490 int main( int argc, char*argv[ ]) { int sockfd, nbytes; //套接字描述符、读入缓冲区的字节数 char buf[1024]; //缓冲区 stmct hostent*he; //主机信息类型 struct sockaddr_in srvaddr; //Internet套接字结构 if (1) {perror("调用参数为零，请输入服务器的主机名!\n");exit(1); } if (2) {perror("无法通过主机名获得主机信息!\n");exit(1); } if (3) {perror("无法创建套按字!\n");exit(1); } bzero( &srvaddr, sizeof(srvaddr));//置空srvaddr srvaddr, sin_family=AF_INET; srvaddr, sin_port: (4); srvaddr.sin_addr: (5); if(connect(sockfd, (6), sizeof( struct sockaddr))=-1) {perror("连接失败!\n");exit(1); } //连接服务器，如果失败则提示用户 if(( nbytes=read ( sockfd, buf, MAXDATASIZE))=-1) {perror("读失败!\n");exit(1); } //从套容接字中读出数据 buf[nbytes]=’\0’; prinff("读到的内容：%s", buf); close( sockfd); //打印数据并关闭套接字 }
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