【单选题】This was the second time that I ______ down in the country far from Beijing.
【简答题】IV . Dictation Listen to the following passage. The passage will be read to you four times. During the first reading, try to get the main idea of the passage. During the second and the third time, you...
【简答题】【 4-4 】 P113 第 9 题 给一个不多于5位的,要求: (1)求出它是几位数; (2)分别输出每一位数字; (3)按逆序输出各位数字,例如原数为321,应输出123.
【单选题】This is the second time I by him;I shall never trust him again. [ ]
【判断题】This time he also met misfortune. His engine broke down. He had to land on the sea. This was the second time.
【简答题】Please listen to the passage for the second time and write down its structure and layer.
【判断题】军事领域的通信使用长波通信,频率是30~300kHz;移动通信使用特高频UHF分米波波段,频率为300~3000MHz