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-I like watching TV very much.-________.
A.I do so.
B.Me, too.
C.So I do.
D.Me, either.
参考答案
更多 “ -I like watching TV very much.-________. A.I do so.B.Me, too.C.So I do.D.Me, either. ” 相关考题
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Which of the following words has gone through the semantic change of subjectification?
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下面是一个简单的使用RAWSOCKET实现的ping程序,填入(n)处。/*simple ping program*/struct sockaddr_in saddr;int rawsock;unsigned short in_cksum(unsigned short*addr, int len){ int sum=0;unsigned short res=0;while(1en>1){sum+=*addr++; len-=2;}if(len=1){*((unsigned char *)(res))=*((unsigned char *)addr); sum+=res;}sum=(sum>>16)+(sam 0xffff);sum+=(sum>>16); res=~sum;return res;}void ping(int signo){int len;int i;static unsigned short seq=0;char buff[8192];struct timeval tv;struet icmp*icmph=(struct icmp * )buff;long*data=(long*)icmph→icmp_data;bzero(buff, 8192);gettimeofday(tv, NULL);icmph→icmp_type=ICMP_ECHO;icmph→icmp_code=0;icmph→icmp_cksum=0;icmph→icmp_id=0;icmph→icmp_seq=0;icmph→icmp_id=getpid()0xffff;icmph→icmp_seq=seq++;data[0]=tv.tv_sec;data[1]=tv.tv_usec;for(i=8; i< ; i++)icmph→icmp_data[i]=(unsigned char)i;icmph→icmp_cksum=in_cksum((unsigned short *)buff, ? 72);len; sendto(rawsock, buff, 72, 0, saddr, sizeof(saddr));alarm(1);}void sigint(int signo){ printf("CATCH SIGINT !!! \n");close(rawsock);exit(0);}void dumppkt(char*buf, int len){ struct ip*iph=(struct ip*)buf;int i=iph→ip_h1*4;struct icmp*icmph=(struct icmp*)buf[i];long*data=(long*)iemph→icmp_data;struct timeval tv;gettimeofday(tv, NULL);if(icmph→icmp_type! =ICMP_ECHOREPLY)return;if(icmph→icmp_id! =(getpid()0xffff))return;printf("From %s:ttl=% d seq=% d time=%.2f ms\n",inet_ntoa(iph→ip_src),iph→ip_ttl?,icmph→icmp_seq,(tv.tv_see-data[0])*1000.0+(tv.tv_usec-data[0])/1000.0);}int main(int argc, char*argv[]){ int len;stuct timeval now;char recvbuff[8192];if(1){printf("%s aaa.bbb.ccc.ddd\n", argv[0]);exit(1);}rawsock=soeket(AF_INET, (2), IPPROTO_ICMP);if(rawsock<0) {perror("soeket");exit(1);}bzero ( saddr, sizeof(saddr));saddr.sin_family=(3);if( inet_aton( argv[1], saddr.sin_addr) <0) {printf("invalid IP address: %s\n", argv[1]);exit(1);}signal(SICALRM, ping);signal(SICINT, sigint);alarm(1);while (1){len=read (4), recvbuff, 8192);if( len<0 errno=EINTR)continue;else it( len<0)perror("read");else if( len>0)dumppkt(recvbuff, len);}close (5);exit(0);}
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