题目内容
Heavy downpours last month in Rhode Island led to widespread flooding, causing millions of dollars in property damage and leaving thousands homeless. The flood waters also poured vast amounts of raw sewage(未经净化的污水) into the rivers and streams that flow into Narragansett Bay.
It sounds like the makings of an environmental nightmare. But in fact it’s just the opposite. To scientists’ delight. The sewage-loaded floodwaters have caused a well-timed growth of phytoplankton. The microscopic creatures that form the foundation of marine(海洋的) food chains. With more food available for fish. Clams and other sea creatures. The bay’s fisheries industry is expected to benefit.
In decades past. Narragansett Bay typically experienced a late winter early spring algal(海藻) bloom that fed creatures up and down the water column. But in recent years, the waters of Narragansen Bay warmed greatly, meriting this seasonal event.
Mark Berman, an oceanographer with the Nationa. Marine Fishertes Service. Said the flood seemed to have sent the bay back in its normal state.
However, local, mutate and federal officials in Rhode Island leave been batting other algal blooms that, by contrast, are causing widespread harm to the Narragansett Bay ecosystem. During summer months, sewage and agricultural runnel flows into the bay. Causing large blooms. But inseam of becoming food for sea creatures, much of the phytoplankton is consumed by bacteria, which grow last in the warmer waters. The rapid bacteria growth leads to hypoxia decrease of oxygen in the water that can cause large fish tools. One such die-off occurred in 2003. when millions of oxygen-starved fish washed up on the belches of Narragansett Bay.
The flood’s positive impact will probably be a one-time event, Mr Berman said. Mcanwhile efforts to curb the harmhl summer honors continue; in 2003. for instance, Providence completed a $359 million sewage tonal under the city designated to reduce the polluted storm overflow into Narragansett Bay.
71.Scientists believe that the row sewage flowing into the bay will .
A.pollute the island’s environ mean B.cause lots of property damage
C.increase the fisheries production D.destroy the food chains in the bay
72.The potential benefit of fisherics industry rclics on the .
A.warm temperatures of the bay. B.growth of phytoplankton
C.large summer alga blooms D.consumption of oxygen by beaters
73.People struggle against the summer blooms because they will .
A.pollute the local natural environment
B.increase the prcducmon of fishery industry
C.cause large fish kills of the bay indirectly
D.provide too much food ior sea creatures
74.It can be inferred that .
A.money spent on the summer blooms has been wasted
B.the government is inverting to promote the local fisheries
C.research of accanology should he encouraged
D.she raw sewage impacts are currently con radiator
75.The underlined word “carb” n the hast postage can be defined as “ ”.
A.control B.consume C.cause D.cure
71—75CBCDA
【解析】略
About twenty of us had been fortunate enough to receive invitations to a film-studio(影棚)to take part in a crowd-scene. Although our "act" would last only for a short time, we could see quite a number of interesting things.
We all stood at the far end of the studio as workmen prepared the scene, setting up trees at the edge of a winding path. Very soon, bright lights were turned on and the big movie-camera was wheeled into position. The director shouted something to the camera operator and then went to speak to the two famous actors nearby. Since it was hot in the studio, it came as a surprise to us to see one of the actors put on a heavy overcoat and start walking along the path. A big fan began blowing tiny white feathers down on him, and soon the trees were covered in "snow". Two more fans were turned on, and a "strong wind" blew through the trees. The picture looked so real that it made us feel cold.
The next scene was a complete contrast (对比). The way it was filmed was quite unusual. Pictures in front taken on an island in the Pacific were shown on a glass screen (幕). An actor and actress stood of the scene so that they looked as if they were at the water’s edge on an island. By a simple trick like this, palm trees, sandy beaches, and blue, clear skies had been brought into the studio!
Since it was our turn next, we were left wondering what scene would be prepared for us. For a full three minutes in our lives we would be experiencing the excitement of being film "stars"!
【小题1】Who is the author?
A.A cameraman. |
B.A film director. |
C.A crowd-scene actor. |
D.A workman for scene setting. |
A.The heavy snowfall. | B.The man-made scene. |
C.The low temperature. | D.The film being shown. |
A.A new scene would be filmed. |
B.More stars would act in the film. |
C.The author would leave the studio. |
D.The next scene would be prepared. |