问题
选择题
| There is little we can do about it, ______? |
| A. is there B. can’t we C. isn’t there D. can we |
答案
答案：A
搜题请搜索小程序“爱下问搜题”
| There is little we can do about it, ______? |
| A. is there B. can’t we C. isn’t there D. can we |
答案：A
将一个光敏电阻与多用电表联成电路。