The Japanese Macaca monkey has been studied in the wild for over 50 years. In 1952, on one small Japanese island, scientists dropped some 36 dirt for the monkeys. The monkeys liked their taste, but they found the dirt 37 .
One clever 18-month-old monkey 38 the problem by washing the sweet potatoes in a nearby river, She taught this to her mother. Her 39 also learned this new way and they taught their mothers too.
All the younger monkeys 40 learned to wash the dirty sweet potatoes to make them 40 to eat. But many found it very hard to learn this and still ate the 42 sweet optatoes.
Then something very 43 . In the autumn of 1958, scientists found that the monkeys on other nearby 44 began washing their sweet potatoes too. Scientists still don’t fully understand how this knowledge was 45 from one island to another.
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My friend, David Smith, kept birds. One day he phoned and 26 me he would be away for a week. He asked me to feed the bird 27 him and said he would leave his key in my mailbox.
Unfortunately, I did not remember to feed the birds 28 the night before David was going to return. I rushed out of my house and it was already dark when I arrived at 29 house. I soon found the key he gave me could unlock neither the front door 30 the back door! I kept 31 of what David would say when came back.
Then I noticed 32 one bedroom window was open. I found a big tone and pushed it under the window 33 the stone was very heavy. I of niose. But in the end, I managed to climb up.
I had one leg inside the bedroom when I suddenly realized that someone 34 a torch(电筒)up at me. I looked down and saw 35 policeman and an old lady, one of David’s neighbours. “What are you doing up there?” Said the policeman. Feeling like a fool, I replied, “I was just going to feed Mr. Smith’s birds.”
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—Excuse me, what’s this for?
—It’s a cleaner and it to pick up dirt.
A.uses |
B.is used |
C.is using |
D.used |
I still remember the park we first met.
A.that |
B.which |
C.where |
D.when |
—We don’t have much homework this we go out together?
—OK. What about a movie?
A.to see |
B.seeing |
C.see |
D.sees |
It doesn’t look like rain, so you bring your umbrella with you.
A.shouldn’t |
B.wouldn’t |
C.can’t |
D.needn’t |