What is the cause of the extreme weather in the country？A．the strong wind.B．Global warming

What is the purpose of the passage？A．To analyze the causes of the panics and teach people

What is the mentioned cause of the obesity problem of children？A．The food is unhealthy.B．C

What is the conversation mainly about？A．The purpose of laughter.B．The cause of laughter an

What is the conversation mainly about？A．The effects of caffeine.B．Some causes of headaches

What can we infer from the last paragraph？A．The movie is extremely funny in all of the aud

What is one of the consequences caused by the many claims of household products? 查看材料