题型:选择题 —How did I do on ________ test? —Well,actually you didn't do very well. I wonder if you had had ________ good review of your lessons.A.a;aB.the;theC.a;theD.the;a 查看答案
题型:选择题 I can't decide to choose which of them to ________. [ ]A. make a friendB. make friends C. make a friend withD. make friends with 查看答案
题型:单项选择题 发射机对输入的射频连续波进行()才能形成发射的射频编码高斯脉冲。A.放大,矩形脉冲调制B.放大,高斯脉冲调制C.小功率进行高斯脉冲调制,放大后再矩形矩形脉冲调制D.小功率进行矩形脉冲调制,放大后再进行高斯脉冲调制 查看答案