Question

Experts warn that global warming will cause climate changes, including more ______ floods, heat waves and droughts. 

A．frequent

B．usual

C．ordinary

D．common

Answer 1

A

试题分析：句意：专家警告说，全球变暖将导致气候变化，包括更加频繁的洪水，热浪和干旱。其余三个选项与“通常，普通，共同的”等意思有关。