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She ________ a lot of photos at the foot of the mountain last Sunday．
A．takes
B．take
C．took
D．make
When a piece of ice ______ into a warm room, it becomes smaller and smaller.
[ ]
A. takes B. is taken C. is took D. was take
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[ ]
But fishing out the largest fish from a population has an unwanted effect: Over time, fewer adult fish get really big. If only the smaller fish reproduce（繁殖）, then future generations become smaller. This is an example of evolution（进化） in action.
One scientist, Dr David Conover has spent the last decade studying the effects of the “keep the big ones” rule and if they can be reversed（颠倒）.
To set up his experiment, Conover and his team caught hundreds of silverside fish and divided them into six groups. For two groups, Conover followed the “keep the large ones” rule and took out the biggest fish. For two other groups, he removed only the small fish.
For the last two groups, he removed fish at random (随意的).
After five years, he measured the fish in each group. In the two groups where the largest fish were regularly removed, the average fish size was smaller than the average size in the other groups. Here was evolution in action: If only small fish survive to reproduce, then future generations of fish will also tend to be small.
For the second five years of his experiment, Conover changed the rules and took fish randomly from each group. At the end of the experiment, he found that the fish that were in the “keep the large ones” group for the first five years had started to get larger again, although he calculated it would take at least 12 years for the fish in that group to return to their original size.
In other words, it takes less time to shrink(变小) than it does to recover.
小题1: The underlined word “it” (Line 2) refers to “ ”
| A．the activity | B．the fish |
| C．the rule | D．the fisherman |
| A．It helps to protect fish numbers. |
| B．It helps to protect fish size. |
| C．It is the custom in most countries. |
| D．They will be punished if they don’t. |
| A．The “keep the big ones” rule made no difference to fish size. |
| B．The “keep the big ones” rule made fish smaller on average. |
| C．The “keep the big ones” rule made the fish bigger on average. |
| D．The “keep the big ones” rule affected all fish populations in the same way. |
| A．To encourage people to fish more carefully. |
| B．To urge governments to change the rules of fishing. |
| C．To describe the results of a scientific experiment. |
| D．To introduce the rules of fishing to readers. |
Tim is a 16-year-old boy who studies in a high school .His parents tell him to study hard and they do everything for him.They wake him up at 6:00 am,and after breakfast his
father takes him to school by car.As soon as the young man comes home from school,the
supper is ready.Of course,he never does chores(家务杂务)。
Once,Tim’s father would go to London on business for a year.Before leaving,he told
his wife to look after their son well.The woman had to get up earlier and did all what
her husband did before.Two months later,she was so tired that she was ill.The young man
got into trouble at once.He couldn’t do housework.Even he didn’t know where to get on the bus.
Yesterday Tim’s mother found his shoes were worn out and told him to buy a new pair.But
he didn’t know how to choose right shoes.The woman had a sigh9叹息）,gave him a shoe pattern(鞋样)and told him to buy shoes himself.With a policeman’s help,he found a shop.The shopkeeper brought some shoes and asked him to choose.When he was trying on pair,suddenly
he remembered something and took them off.The man was surprised and asked,“What’s the
matter?”
“I’m sorry .I’ve left my shoe pattern at home.”
56.Tim_______when he comes home from school in the evening.
A.does chores B.helps to cook supper
C.does nothing except doing homework D.has dinner at once
57.Tim’s mother was ill because ___________.
A.her husband went to London on business
B.she had to take care of her son by herself and she was too tired.
C.her son didn’t study hard and she was too angry.
D.she had to get up too early when her husband was at home.
58.Tim’s mother_______to help him choose right shoes.
A.gave him a book about buying shoes B.asked a policeman
C.gave him a shoe pattern D.called the shoe shop
59.Which of the following is not true according to the passage?
A.Tim’s parents don’t make him do any housework
B.Nobody can buy right shoes without a shoe pattern.
C.Tim’s father told his wife to look after their son well before he went to London.
D.Tim found the shoe shop with a policeman’s help.
60.What do you think of Tim’s parents?
A.They are the best parents of all. B.They give their son too much love.
C.Theit love to their son is great and right. D.They feel tired and bored every day.
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