题干
—What does the model plane look like?
—Well, the wings of the plane are _____ of its body.
—Well, the wings of the plane are _____ of its body.
A：more than the length twice
B：twice more than the length
C：more than twice the length
D：more twice than the length
答案(点此获取答案解析）
C
3B(？)＋C(？)(ΔH＞0)，随着温度升高，气体平均相对分子质量有变小趋势，则下列判断正确的是( ).
