What was the purpose of Goldman’s invention? (No more than 10 words)

[单选题]What is the author’s purpose in writing the passage?A．To give a prescription for insomnia.B．To urge people to sleep less.C．To analyze the sleep pattern of modern people.D．To throw new light on human sleep.

[单选题]What’s the author’s purpose of writing this test?A． To suggest ways to prepare for college learningB． To help readers find the right collegeC． To make Johnson Review popularD． To introduce college life

[单选题]What is the purpose of Johnson's speech tour?A． To take himself as an example in fighting the disease.B． To raise the awareness of young American against the disease.C． To provide a better cure for the black American HIV sufferers.D． To try some new

[单选题]What is the author′s primary purpose in writing the passage?A.Revealing the

[单选题]29． What's the purpose of the passage?A． To give some advice on how to lose weight．B． To advise people to eat apples every day．C． To tell people how to enjoy a better life．D． To advise people to give up bad habits．

[单选题]What is the purpose of the text?A．To describe the job of a ROM．B．To provide information about ALRL．C．To announce an open position at ALRL．D．To make known the opening of the new laboratories．

[单选题]What is NOT the purpose of this music program？A．To study the language of music.B．To learn more about the music.C．To give a complete background to the music.D．To give people some music to listen to.

[单选题]What is the main purpose of the passage?A． To teach patients ways for quick recovery.B． To present a report on a scientific research.C． To show the importance of a good lifestyle.D．, To give information about a kind of medicine.

[单选题]What is the main purpose of the passage?A．To show us the hidden beauty in our world.B．To warn us not to get lost in the fantasy wonderC．To argue against the misuse of the sense of wonderD．To discuss the influence of the world of make-believe

[单选题]What is the purpose of the intake/exhaust valves in a diesel engine? （）A . They regulate the combustion cycleB . They supply cooling waterC . They synchronize the ignition sparkD . They supply and regulate the lubricant flow