问题
选择题
| So far this year we _____ a fall in house prices by between 5 percent and 10 percent. |
A. saw B. see C. had seen D. have seen |
答案
答案：D
搜题请搜索小程序“爱下问搜题”
| So far this year we _____ a fall in house prices by between 5 percent and 10 percent. |
A. saw B. see C. had seen D. have seen |
答案：D
，要使f(x)在x＝0处连续，则常数a的值为()。