水平迭加能使多次波受到压制,反射波得到增强.
参考答案：对
------______. You can pay weekly or monthly.
A. It just depends B. That’s all right
C. It’s up to you D. I’m with you on that
Tomorrow I have a day off, so I want to ______. [ ]
A. take a class
B. hang out with my friends
C. takes a class
D. hangs out with my friends
