题干
We____ shopping unless it ____ tomorrow.
A：will go, will rain
B：go, will rain
C：will go, rains
D：go, rains
答案(点此获取答案解析）
C
We____ shopping unless it ____ tomorrow.
A：will go, will rain
B：go, will rain
C：will go, rains
D：go, rains
中,
,则等比数列
的值为