People who suffer from excessive drowsiness during the daytime may be victimes of a condition

     There are no reliable data showing how many people have narcolepsy. Some estimates put the

Where does the author mention the possible cause of narcolepsy?

According to airline industry statistics, almost 90% of airline accidents are survivable or partially survivable. But passengers can increase their chances of survival by learning and following certain tips. Experts say that you should read and listen to safety instructions before takeoff and ask questions if you have uncertainties. You should fasten your seat belt low on your hips and as tightly as possible. Of course, you should also know how the release mechanism of your belt operates. During takeoffs and landings, you are advised to keep your feet flat on the floor. Before takeoff you should locate the nearest exit and an alternative exit and count the rows of seats between you and the exits so that you can find them in the dark if necessary.

In the event that you are forewarned of a possible accident, you should put your hands on your ankles and keep your head down until the plane comes to a complete stop. If smoke is present in the cabin, you should keep your head low and cover your face with napkins, towels, or clothing. If possible, wet these for added protection against smoke inhalation. To evacuate as quickly as possible, follow crew commands and do not take personal belongings with you. Do not jump on escape slides before they are fully inflated, and when you jump, do so with your arms and legs extended in front of you. When you get to the ground, you should move away from the plane as quickly as possible, and never smoke near the wreckage.

What is the main topic of the passage?

According to airline industry statistics, almost 90% of airline accidents are survivable or partially survivable. But passengers can increase their chances of survival by learning and following certain tips. Experts say that you should read and listen to safety instructions before takeoff and ask questions if you have uncertainties. You should fasten your seat belt low on your hips and as tightly as possible. Of course, you should also know how the release mechanism of your belt operates. During takeoffs and landings, you are advised to keep your feet flat on the floor. Before takeoff you should locate the nearest exit and an alternative exit and count the rows of seats between you and the exits so that you can find them in the dark if necessary.

In the event that you are forewarned of a possible accident, you should put your hands on your ankles and keep your head down until the plane comes to a complete stop. If smoke is present in the cabin, you should keep your head low and cover your face with napkins, towels, or clothing. If possible, wet these for added protection against smoke inhalation. To evacuate as quickly as possible, follow crew commands and do not take personal belongings with you. Do not jump on escape slides before they are fully inflated, and when you jump, do so with your arms and legs extended in front of you. When you get to the ground, you should move away from the plane as quickly as possible, and never smoke near the wreckage.

According to the passage, which exits should an airline passenger locate before takeoff?

People who suffer from excessive drowsiness during the daytime may be victimes of a condition known as "narcolepsy". While most people may feel sleepy while watching TV or fater eating a meal, narcoleptics may fall asleep at unusual or embarrassing times. They may doze while eating, talking, taking a shower, or even driving a car. Victims can be affected in one of two ways. Most narcoleptics have several sleeping spells during each day with alert periods in between. A minority of others feel drowsy almost all the time and are alert for only brief intervals.

There are no reliable data showing how many people have narcolepsy. Some estimates put the number as high as 300,000 in the United States alone. The cause of this illness has not been identified, although recent research suggests that the problem may stem from an immune system reacting abnormally to the brain's chemical processes. There is currently no cure for narcolepsy, so sufferers of this condition can only have their symptoms treated through a combination of counseling and drugs.

Which of the following statements about narcolepsy is NOT true?

According to airline industry statistics, almost 90% of airline accidents are survivable or partially survivable. But passengers can increase their chances of survival by learning and following certain tips. Experts say that you should read and listen to safety instructions before takeoff and ask questions if you have uncertainties. You should fasten your seat belt low on your hips and as tightly as possible. Of course, you should also know how the release mechanism of your belt operates. During takeoffs and landings, you are advised to keep your feet flat on the floor. Before takeoff you should locate the nearest exit and an alternative exit and count the rows of seats between you and the exits so that you can find them in the dark if necessary.

Travelers are urged by experts to read and listen to safety instructions

According to airline industry statistics, almost 90% of airline accidents are survivable or partially survivable. But passengers can increase their chances of survival by learning and following certain tips. Experts say that you should read and listen to safety instructions before takeoff and ask questions if you have uncertainties. You should fasten your seat belt low on your hips and as tightly as possible. Of course, you should also know how the release mechanism of your belt operates. During takeoffs and landings, you are advised to keep your feet flat on the floor. Before takeoff you should locate the nearest exit and an alternative exit and count the rows of seats between you and the exits so that you can find them in the dark if necessary.

In the event that you are forewarned of a possible accident, you should put your hands on your ankles and keep your head down until the plane comes to a complete stop. If smoke is present in the cabin, you should keep your head low and cover your face with napkins, towels, or clothing. If possible, wet these for added protection against smoke inhalation. To evacuate as quickly as possible, follow crew commands and do not take personal belongings with you. Do not jump on escape slides before they are fully inflated, and when you jump, do so with your arms and legs extended in front of you. When you get to the ground, you should move away from the plane as quickly as possible, and never smoke near the wreckage.

According to the passage, airline travelers should keep their feet flat on the floor

     People who suffer from excessive drowsiness during the daytime may be victimes of a condition known as "narcolepsy". While most people may feel sleepy while watching TV or after eating a meal, narcoleptics may fall asleep at unusual or embarrassing times. They may doze while eating, talking, taking a shower, or even driving a car. Victims can be affected in one of two ways. Most narcoleptics have several sleeping spells during each day with alert periods in between. A minority of others feel drowsy almost all the time and are alert for only brief intervals.

      There are no reliable data showing how many people have narcolepsy. Some estimates put the number as high as 300,000 in the United States alone. The cause of this illness has not been identified, although recent research suggests that the problem may stem from an immune system reacting abnormally to the brain's chemical processes. There is currently no cure for narcolepsy, so sufferers of this condition can only have their symptoms treated through a combination of counseling and drugs.

Narcolepsy is a condition in which people

People who suffer from excessive drowsiness during the daytime may be victimes of a condition known as "narcolepsy". While most people may feel sleepy while watching TV or fater eating a meal, narcoleptics may fall asleep at unusual or embarrassing times. They may doze while eating, talking, taking a shower, or even driving a car. Victims can be affected in one of two ways. Most narcoleptics have several sleeping spells during each day with alert periods in between. A minority of others feel drowsy almost all the time and are alert for only brief intervals.

The word "others" at the end of the paragraph refers to

     People who suffer from excessive drowsiness during the daytime may be victimes of a condition known as "narcolepsy". While most people may feel sleepy while watching TV or fater eating a meal, narcoleptics may fall asleep at unusual or embarrassing times. They may doze while eating, talking, taking a shower, or even driving a car. Victims can be affected in one of two ways. Most narcoleptics have several sleeping spells during each day with alert periods in between. A minority of others feel drowsy almost all the time and are alert for only brief intervals.

      There are no reliable data showing how many people have narcolepsy. Some estimates put the number as high as 300,000 in the United States alone. The cause of this illness has not been identified, although recent research suggests that the problem may stem from an immune system reacting abnormally to the brain's chemical processes. There is currently no cure for narcolepsy, so sufferers of this condition can only have their symptoms treated through a combination of counseling and drugs.

The passage implies that narcolepsy

People who suffer from excessive drowsiness during the daytime may be victimes of a condition known as "narcolepsy". While most people may feel sleepy while watching TV or fater eating a meal, narcoleptics may fall asleep at unusual or embarrassing times. They may doze while eating, talking, taking a shower, or even driving a car. Victims can be affected in one of two ways. Most narcoleptics have several sleeping spells during each day with alert periods in between. A minority of others feel drowsy almost all the time and are alert for only brief intervals.

The word "alert" at the end of the paragraph is closest in meaning to