The experiment needs fifty people divided into two groups of the same size． Group A is to take part in a 7-week exercise, while Group B is not allowed to do any exercise during those seven weeks． On the day before the experiment began, all fifty men took part in a step-test． They were told to step up and down on a 16-inch-long bench at 30 steps a minute for five minutes． After the test each man’s heart-beating was taken and recorded． Then during the seven weeks men in Group A rode a sort of bike-like exercise machine for 15 minutes a day． During the first day ride they were asked to ride very slowly． For the next three days, they were permitted to ride a bit more quickly． And the speed of riding was increased every few days until the end of the experiment, when both Group A and Group B were given the step-test again and the heart-beating was taken again, too． Heart-beating of Group A members was to have dropped to an average of 30 heart beats per minute while that of Group B members remained the same or almost unchanged．

1． How many people were in each group?

A． 100 B． 50 C．25 D． 15

2． The step-test was given ______．

A． after each exercise period

B． only once, at the beginning of the seven-week period

C． at the beginning and at the end of the seven-week period

D． twice to the men in Group A and once to the men in Group B

3． The exercise was planned so that the amount of quick riding _________．

A． increased every few days　　 B． changed every other day

C． increased every other day　　 D． increased every exercise period

4． What did Group A do in their experiment? They ______ ．

A． stepped up and down on a bench each day

B． pushed and pulled the bikes every day

C． were prevented from doing any exercise

D． rode on an exercise machine

5． It seemed that _______ during the whole experiment．

A． Group A did less exercise than Group B

B． Group B did less exercise than Group A　　

C． Group A did everything

D． Group B did nothing

　　One of New York's most beautiful and valuable building　　 1_________

is in danger. The New York Public Library, in the　　 2_________

heart of the city at 42 Street may have to close its　　　　 3_________

doors. The library is very special place. Even though　　　　4_________

it is in a busiest part of the city, it has grass　　　　 5_________

and trees around it, and benches for people to sit.　　　　 6_________

Even more unusual in the crowding New York, its rooms　　 7_________

are very large. The roof of the Main Reading Room are　　 8_________

fifty-one feet tall. Here, a reader can sit and think and　　9_________

work comfortable. And what books there are to work with! 10_________

The Great Fire of London started in the very early hours of September 2, 1666. In four days it destroyed more than three-quarters of the old city, where most of the houses were wooden and close together. Over one hundred people became homeless, but only a few lost their lives .
　　The fire started on Sunday morning in the house of the King’s baker（面包师）in Pudding Lane. The baker, with his wife and family, was able to get out through a window into the roof. A strong wind blew the fire from the bakery（面包房）into a small hotel next door. Then it spread quickly into Thames Street. That was the beginning.
　　By eight o’clock three hundred houses were on fire. On Monday nearly a kilometer of the city was burning along the River Thames. Tuesday was the worst day. The fire destroyed many well-known buildings, old St Paul’s and the Guildhall among them .
　　Samuel Pepys , the famous writer, writer about the fire, “People threw their things into the river. Many poor people stayed in their houses until the last moment. Birds fell out of the air because of the heat .”
　　The fire stopped only when the King finally ordered people to destroy hundreds of buildings in the path（路径） of the fire.With nothing left to burn, the fire became weak and finally died out.
　　After the fire, Christopher Wren, the architect(建筑师), wanted a city with wider streets and fine new houses of stone．In fact, the streets are still narrow, but he did build more than fifty churches, among which was the new St Paul’s
　　The fire caused great pain and loss, but after it London was a better place: a city for the future and not just of the past.
【小题1】The underlined word‘family’in the second paragraph probably means____.