第21题: [单项选择]Although a herd of African elephants may have {{U}}up to{{/U}} one thousand members, Asiatic elephants live in bands of five to sixty animals. A. as many as B. more than C. fewer than D. at least 参考答案:A
第22题: [单项选择]I ______ what he says at the meeting. [A] will write down [B] shall take away [C] would hear from 参考答案:A 答案解析:[解析] 此题考查词义辨析。write down写下,记下;take away拿走,带走;hear from收到来信。
第29题: [单项选择]当使用TCP进行数据传输时,如果接收方通知了一个800字节的窗口值,那么发送方可以发送( )。 A. 长度为2000字节的TCP包 B. 长度为1500字节的TCP包 C. 长度为1000字节的TCP包 D. 长度为500字节的TCP包 参考答案:D 答案解析:[解析] 在使用TCP进行数据传输时,发送方发送的数据报大小一定要小于或等于接收方的窗口值,所以答案为D)。