命题“∀x∈R，x2+2x+2＞0”的否定是（ ）
A：∀x∈R，x2+2x+2≤0
B：∃x∈R，x2+2x+2≤0
C：∀x∈R，x2+2x+2＜0
D：∃x∈R，x2+2x+2＞0
I'm going to ____ a computer ____ ____ as a present.
