2块PREP CR讨论...欢迎NN进来一看

1. In the two years following the unification of Germany in 1989, the number of cars owned by residents of East Germany and the total distance traveled by cars in East Germany both increased by about 40 percent.  In those two years, however, the number of East German residents killed each year as car occupants in traffic accidents increased by about 300 percent.

1. In the two years following the unification of Germany in 1989, the number of cars owned by residents of East Germany and the total distance traveled by cars in East Germany both increased by about 40 percent.  In those two years, however, the number of East German residents killed each year as car occupants in traffic accidents increased by about 300 percent.

Which of the following, if true, most helps to explain the disproportionate increase in traffic fatalities?

A) The average number of passengers per car was higher in the years before unification than it was in the two years after.

B) After unification, many people who had been living in East Germany relocated to West Germany.

C) After unification, a smaller proportion of the cars being purchased by East German residents were used vehicles.

D) Drivers who had driven little or not at all before 1989 accounted for much of the increase in the total distance traveled by cars.

E) Over the same two-year period in East Germany, other road users, such as motorcyclists, bicyclists, and pedestrians, experienced only small increases in traffic fatalities.

2. A popular beach has long had a dolphin feeding program in which fish are given to dolphins several times a day; many dolphins get as much as half of their food each day there.  Although dolphins that first benefit from the program as adults are healthy and long-lived, their offspring have a lower life expectancy than offspring of dolphins that feed exclusively in the wild.

Which of the following, if true, most helps to explain the lower life expectancy of offspring of dolphins feeding at the beach compared to other young dolphins?

A) Sharks that prey on dolphins are less common in the open seas off the beach than in many other areas of the open seas where dolphins congregate.

B) Many of the adult dolphins that feed at the beach are females that nurse their offspring there.

C) The fish given to the dolphins at the beach are the same types of fish that dolphins typically catch in the wild.

D) Many dolphins that feed at the beach with their offspring come to the beach only a few times a month.

E) Adult dolphins that feed at the beach spend much less time teaching their offspring how to catch fish in the wild than do other adult dolphins.

A) The average number of passengers per car was higher in the years before unification than it was in the two years after.

B) After unification, many people who had been living in East Germany relocated to West Germany.

C) After unification, a smaller proportion of the cars being purchased by East German residents were used vehicles.

D) Drivers who had driven little or not at all before 1989 accounted for much of the increase in the total distance traveled by cars.

E) Over the same two-year period in East Germany, other road users, such as motorcyclists, bicyclists, and pedestrians, experienced only small increases in traffic fatalities.

2. A popular beach has long had a dolphin feeding program in which fish are given to dolphins several times a day; many dolphins get as much as half of their food each day there.  Although dolphins that first benefit from the program as adults are healthy and long-lived, their offspring have a lower life expectancy than offspring of dolphins that feed exclusively in the wild.

Which of the following, if true, most helps to explain the lower life expectancy of offspring of dolphins feeding at the beach compared to other young dolphins?

A) Sharks that prey on dolphins are less common in the open seas off the beach than in many other areas of the open seas where dolphins congregate.

B) Many of the adult dolphins that feed at the beach are females that nurse their offspring there.

C) The fish given to the dolphins at the beach are the same types of fish that dolphins typically catch in the wild.

D) Many dolphins that feed at the beach with their offspring come to the beach only a few times a month.

E) Adult dolphins that feed at the beach spend much less time teaching their offspring how to catch fish in the wild than do other adult dolphins.

B) After unification, many people who had been living in East Germany relocated to West Germany.

C) After unification, a smaller proportion of the cars being purchased by East German residents were used vehicles.

D) Drivers who had driven little or not at all before 1989 accounted for much of the increase in the total distance traveled by cars.

E) Over the same two-year period in East Germany, other road users, such as motorcyclists, bicyclists, and pedestrians, experienced only small increases in traffic fatalities.

2. A popular beach has long had a dolphin feeding program in which fish are given to dolphins several times a day; many dolphins get as much as half of their food each day there.  Although dolphins that first benefit from the program as adults are healthy and long-lived, their offspring have a lower life expectancy than offspring of dolphins that feed exclusively in the wild.

Which of the following, if true, most helps to explain the lower life expectancy of offspring of dolphins feeding at the beach compared to other young dolphins?

A) Sharks that prey on dolphins are less common in the open seas off the beach than in many other areas of the open seas where dolphins congregate.

B) Many of the adult dolphins that feed at the beach are females that nurse their offspring there.

C) The fish given to the dolphins at the beach are the same types of fish that dolphins typically catch in the wild.

D) Many dolphins that feed at the beach with their offspring come to the beach only a few times a month.

E) Adult dolphins that feed at the beach spend much less time teaching their offspring how to catch fish in the wild than do other adult dolphins.

C) After unification, a smaller proportion of the cars being purchased by East German residents were used vehicles.

D) Drivers who had driven little or not at all before 1989 accounted for much of the increase in the total distance traveled by cars.

E) Over the same two-year period in East Germany, other road users, such as motorcyclists, bicyclists, and pedestrians, experienced only small increases in traffic fatalities.

2. A popular beach has long had a dolphin feeding program in which fish are given to dolphins several times a day; many dolphins get as much as half of their food each day there.  Although dolphins that first benefit from the program as adults are healthy and long-lived, their offspring have a lower life expectancy than offspring of dolphins that feed exclusively in the wild.

Which of the following, if true, most helps to explain the lower life expectancy of offspring of dolphins feeding at the beach compared to other young dolphins?

A) Sharks that prey on dolphins are less common in the open seas off the beach than in many other areas of the open seas where dolphins congregate.

B) Many of the adult dolphins that feed at the beach are females that nurse their offspring there.

C) The fish given to the dolphins at the beach are the same types of fish that dolphins typically catch in the wild.

D) Many dolphins that feed at the beach with their offspring come to the beach only a few times a month.

E) Adult dolphins that feed at the beach spend much less time teaching their offspring how to catch fish in the wild than do other adult dolphins.

D) Drivers who had driven little or not at all before 1989 accounted for much of the increase in the total distance traveled by cars.

E) Over the same two-year period in East Germany, other road users, such as motorcyclists, bicyclists, and pedestrians, experienced only small increases in traffic fatalities.

2. A popular beach has long had a dolphin feeding program in which fish are given to dolphins several times a day; many dolphins get as much as half of their food each day there.  Although dolphins that first benefit from the program as adults are healthy and long-lived, their offspring have a lower life expectancy than offspring of dolphins that feed exclusively in the wild.

Which of the following, if true, most helps to explain the lower life expectancy of offspring of dolphins feeding at the beach compared to other young dolphins?

A) Sharks that prey on dolphins are less common in the open seas off the beach than in many other areas of the open seas where dolphins congregate.

B) Many of the adult dolphins that feed at the beach are females that nurse their offspring there.

C) The fish given to the dolphins at the beach are the same types of fish that dolphins typically catch in the wild.

D) Many dolphins that feed at the beach with their offspring come to the beach only a few times a month.

E) Adult dolphins that feed at the beach spend much less time teaching their offspring how to catch fish in the wild than do other adult dolphins.

E) Over the same two-year period in East Germany, other road users, such as motorcyclists, bicyclists, and pedestrians, experienced only small increases in traffic fatalities.

2. A popular beach has long had a dolphin feeding program in which fish are given to dolphins several times a day; many dolphins get as much as half of their food each day there.  Although dolphins that first benefit from the program as adults are healthy and long-lived, their offspring have a lower life expectancy than offspring of dolphins that feed exclusively in the wild.

Which of the following, if true, most helps to explain the lower life expectancy of offspring of dolphins feeding at the beach compared to other young dolphins?

A) Sharks that prey on dolphins are less common in the open seas off the beach than in many other areas of the open seas where dolphins congregate.

B) Many of the adult dolphins that feed at the beach are females that nurse their offspring there.

C) The fish given to the dolphins at the beach are the same types of fish that dolphins typically catch in the wild.

D) Many dolphins that feed at the beach with their offspring come to the beach only a few times a month.

E) Adult dolphins that feed at the beach spend much less time teaching their offspring how to catch fish in the wild than do other adult dolphins.

2. A popular beach has long had a dolphin feeding program in which fish are given to dolphins several times a day; many dolphins get as much as half of their food each day there.  Although dolphins that first benefit from the program as adults are healthy and long-lived, their offspring have a lower life expectancy than offspring of dolphins that feed exclusively in the wild.

Which of the following, if true, most helps to explain the lower life expectancy of offspring of dolphins feeding at the beach compared to other young dolphins?

A) Sharks that prey on dolphins are less common in the open seas off the beach than in many other areas of the open seas where dolphins congregate.

B) Many of the adult dolphins that feed at the beach are females that nurse their offspring there.

C) The fish given to the dolphins at the beach are the same types of fish that dolphins typically catch in the wild.

D) Many dolphins that feed at the beach with their offspring come to the beach only a few times a month.

E) Adult dolphins that feed at the beach spend much less time teaching their offspring how to catch fish in the wild than do other adult dolphins.

Which of the following, if true, most helps to explain the lower life expectancy of offspring of dolphins feeding at the beach compared to other young dolphins?

A) Sharks that prey on dolphins are less common in the open seas off the beach than in many other areas of the open seas where dolphins congregate.

B) Many of the adult dolphins that feed at the beach are females that nurse their offspring there.

C) The fish given to the dolphins at the beach are the same types of fish that dolphins typically catch in the wild.

D) Many dolphins that feed at the beach with their offspring come to the beach only a few times a month.

E) Adult dolphins that feed at the beach spend much less time teaching their offspring how to catch fish in the wild than do other adult dolphins.

A) Sharks that prey on dolphins are less common in the open seas off the beach than in many other areas of the open seas where dolphins congregate.

B) Many of the adult dolphins that feed at the beach are females that nurse their offspring there.

C) The fish given to the dolphins at the beach are the same types of fish that dolphins typically catch in the wild.

D) Many dolphins that feed at the beach with their offspring come to the beach only a few times a month.

E) Adult dolphins that feed at the beach spend much less time teaching their offspring how to catch fish in the wild than do other adult dolphins.

B) Many of the adult dolphins that feed at the beach are females that nurse their offspring there.

C) The fish given to the dolphins at the beach are the same types of fish that dolphins typically catch in the wild.

D) Many dolphins that feed at the beach with their offspring come to the beach only a few times a month.

E) Adult dolphins that feed at the beach spend much less time teaching their offspring how to catch fish in the wild than do other adult dolphins.

C) The fish given to the dolphins at the beach are the same types of fish that dolphins typically catch in the wild.

D) Many dolphins that feed at the beach with their offspring come to the beach only a few times a month.

E) Adult dolphins that feed at the beach spend much less time teaching their offspring how to catch fish in the wild than do other adult dolphins.

D) Many dolphins that feed at the beach with their offspring come to the beach only a few times a month.

E) Adult dolphins that feed at the beach spend much less time teaching their offspring how to catch fish in the wild than do other adult dolphins.

E) Adult dolphins that feed at the beach spend much less time teaching their offspring how to catch fish in the wild than do other adult dolphins.

两道解释题，解释题的要点就是找到原文中不合理的地方加以解释。

1、车和里程增长40%，死亡率增长300%，死亡率为什么高就是要解释的地方

选项D，对于增长的里程，其司机在1989年以前很少开车或者根本没有开过车。所以死亡率高。

2、为什么被喂养的海豚后代寿命短

选项E，被喂养的海豚花更少的时间来教后代捕鱼。

mm排版太花哨了，我晕。。。