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Last month I went to visit my old neighborhood.As l walked along the street,my mind was 36 by memories of the past.I saw the 37 apartment building where I had lived and the playground where I had played.As I 38 these once familiar surroundings,39 of myself as a child there came to mind.40,what I saw and what I remembered were not the same.I sadly 4l that the best memories are those 42 untouched.
My old apartment building,as I remember,was bright and 43.It was 44 just a place to live in. It was a movie house,a space station,or whatever my young mind could imagine.I would 45 away with my friends and play in the basement.This was always 46 because it was so cool and dark,and there were so many things there to hide among.There was a small 47 at the back of the building.We would go there to lie in the 48 of the trees and enjoy ourselves.
But what I saw was 49 different.The apartment building was now in 50,which looked hardly worth living in, windows broken and once clean walls covered with dirty 51.The river was polluted,hardly 52.The trees and flowers were all dead.It was really heartbreaking to see all this.
While I do not 53 having seen my old neighborhood, I do not think my 54 childhood memories can ever be the same.I 55 it is true when they say.“You can never go home again.”
36.A.drowned B.flooded C.interrupted D.fixed
37.A.bright B.historic C.modern D.old
38.A.viewed B.spied C.enjoyed D.searched
39.A.photos B.slides C.pictures D.drawings
40.A.Therefore B.However C.Moreover D.Anyway
41.A.realized B.observed C.reflected D.obtained
42.A.gone B.forgotten C.deserted D.1eft
43.A.alone B.awake C.alive D.aware
44.A.other than B.more than C.rather than D.better than
45.A.steal B.jog C.walk D.move
46.A.embarrassing B.shocking C.boring D.exciting
47.A.factory B.river C.school D.1ake
48.A.shadow B.shelter C.shade D.structure
49.A.completely B.nearly C.mostly D.slightly
50.A.disaster B.disorder C.discomfort D.disrepair
51.A.signs B.marks C.signals D.notices
52.A.changeable B.visible C.comfortable D.recognizable
53.A.regret B.enjoy C.remember D.mind
54.A.difficult B.normal C.innocent D.lonely
55.A.imagine B.suppose C.insist D.suggest
查看习题详情和答案>>different from their sharing partner, and yet all live easier lives because of each other. It is nature's
idea of sharing.
An example of this is the shark and pilot fish. The pilot fish is a little guy and he would be
helpless if he hung around by himself in the great ocean. But his smartness makes up for his size.
He cleverly swims along beside the shark and when the shark eats, the pilot fish gets the leftovers.
The shark also benefits from this relationship. The pilot fish cleans food scraps (碎屑) and insects
from the shark's skin.
Another example is the sea anemone (海葵) and striped clown fish. The sea anemone looks
like a flower but contains poisonous cells. When small fish swim into it, the anemone traps and
paralyzes (使麻痹) them. However, the striped clown fish is able to swim into the poisonous
anemone without being harmed. To pay for his safety, the clown fish brings food to the anemone.
He also guides other fish into the anemone's deadly trap.
Large mammals such as the ox, antelope and African buffalo form such a relationship with the
oxpecker. They provide daily meals to the bird that eats insects. The various large mammals act
as a restaurant with a varied menu for the oxpecker. What do they get in return from the bird?
Free beauty treatments!
Some plants live together in a beneficial relationship. Fungus (菌类) does not have chlorophyll
(叶绿素) that plants need to make food. However, the green alga (海藻) does contain chlorophyll.
It is, therefore, able to feed the fungus along with itself. But nothing is free! The fungus repays it
by protecting the alga. Since it takes in and stores water, it can provide the alga with an unending
water supply.
B. To help the shark to get food.
C. To get food and protection.
D. To find some insects.
B. leads other fish into the anemone
C. harms other fish with poison
D. protects the anemone's cells
B. They are mostly seen near restaurants.
C. They stay away from large mammals.
D. They feed on small insects.
B. Places where sharing exists.
C. The relationship of living things.
D. Animals that depend on each other.
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