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听力原文：It is already known that incorrect usage of combination lap and shoulder seat belts can lead to injuries of the spine, neck and pelvis. Now, evidence from three case reports suggests that individuals who ride in a reclined position while wearing these safety belts may place themselves at additional risk of injury.
According to the speaker, a seat belt and an upright seat provide less protection for car passengers.
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听力原文：The Clinton administration has signaled its opposition to a 1985 law that bans most US aid to Pakistan because of its nuclear program. A US State Department spokesman said the law does not advance the US goal of stopping the spread of nuclear weapons in South Asia.
The Clinton administration thought that the ban of US aid to Pakistan successfully stopped the spread of nuclear weapons in South Asia.
The mass media and specialized reading materials replaced the old shared literacy culture.
According to the speaker, even America is suffering from economic depression, the American economy will soon be recovered if Americans can solve the problem of unemployment and control oil prices.
听力原文：Our discussion of earthquakes would be incomplete if we didn't raise the possibility of their being caused by external forces. As you know there are increases and decreases in episodes of seismic activity, but there is no regular or predictable pattern.
The speaker says that the periods of seismic activity are increasingly complex and may cause the earth to wobble.
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