• 2021-04-14
    【单选题】命题“∀x∈R,sinx+1≥0”的否定是()(5.0分)
    A. ∃x 0 ∈R,sinx 0 +1<0 B. ∀x 0 ∈R,sinx 0 +1<0 C. ∃x 0 ∈R,sinx 0 +1≥0 D. ∀x 0 ∈R,sinx 0 +1≤0