问题
填空题
在等比数列{an}中,若a1>0,a2a4+2a3a5+a4a6=25,则a3+a5=( )。
答案
5
在等比数列{an}中,若a1>0,a2a4+2a3a5+a4a6=25,则a3+a5=( )。
5
用方框中所给词的适当形式填空 | |
2. If I ______ you, I wouldn't tell him the truth. 3. I think we should ______to wear our own clothes. 4. I am against ______fire in the forest. It's too dangerous. 5. We should be good ________ when the teacher speaks to us in class. |