2. A city charges monthly gas fees according to the following rules: If the gas usage does not exceed 60 cubic meters, it is charged at 0.8 yuan per cubic meter; if it exceeds 60 cubic meters, the excess part is charged at 1.2 yuan per cubic meter. It is known that a user's average gas fee per cubic meter in April was 0.88 yuan. Therefore, the gas fee the user should pay in April is ( ).
(A) 60 yuan
(B) 66 yuan
(C) 75 yuan
(D) 78 yuan
2. (B).

Since $0.88>0.8$, the coal used this month exceeded 60 cubic meters. Let $x$ be the cubic meters used. Then, we have
$$
60 \div 0.8 + 1.2(x - 60) = 0.88x,
$$

Solving for $x$ gives $x = 75$.
$$
75 \times 0.88 = 66(\text{ yuan }).
$$