题目内容

Jaime, Bradley, Carrie, Josh和Alan每人根据自己的职业作答了一份关于Robot的调查问卷,第71至75题是他们的职业介绍。阅读下面七项信息(A、B、C、D、E、F和G),选出与他们职业匹配的最佳选项,并标在答题纸的相应位置上, 选项中有两项是多余选项。
71. _______ Carrie is a young man who has a job in a city construction company. He is afraid of climbing up ladders and carrying the iron bars and concrete onto higher places.

72. _______ Jaime is a professor in the field of biochemistry. He is worried about his health situation as he keeps so close to harmful elements year in and year out.

73. _______ Bradley works in the International Ocean Security Association. He is sad to think of the fact that there were so many people who couldn’t be saved at last in disasters.

74. _______ Alan is a worker in an auto factory. He is thinking of changing another job which is more interesting and creative.

75. _______ Josh is an administrator of the National Spaceflight Bureau, which is short of qualified pilots at the moment.

 

A
I suppose robots could be used as dust people during night time, as they don’t need to sleep and they are comparatively safe in polluted environment.
B
I suppose small remote control robots could be used as sea rescuing workers to search through wreckage(打捞)in a disaster looking for people in the sea. Bomb defusers(扫雷管)are now robots reducing the risk of losing a life.

C

I suppose robots could be used to do jobs that are dangerous, as they can lift heavy objects, paint, handle chemicals, and perform the same job hour after hour, day after day without stop. 

D
I suppose robots could be used as chemical researchers. At least they can help us carry harmful chemicals in a chemical plant or help to go into small areas inaccessible to us. It can be used to examine the inside of a nuclear reactor(核反应堆).

E
I suppose robots could be astronauts and they could travel very far away, like Pluto. If they can, we don’t need to especially train human beings to be astronauts as it costs quite a lot and it also takes many years to make a professional astronaut.
F
I suppose robots could be used as car assembly(装配)workers, in parts of a car building line. Assembly lines make the process move faster, get more work done and cost less. But the job is so mechanical and boring.

G
I suppose robots can do such dangerous jobs as sky-scraper builders that would be safer for human beings. If injured or broken, they can be fixed easily. They can also work in unfavorable conditions such as dark, extreme heat, extreme cold etc.

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Rice plants normally grow well in still water. But most will die if they are completely underwater for more than four days. Now, researchers have identified a gene (基因) that helps rice survive longer underwater. They say the discovery will lead to new kinds of rice plants that can survive flooding, and therefore reach their final aim, ensuring more dependable food supplies.

Tests are now being done in Laos, Bangladesh and India. The researchers say experimental rice plants with the gene have survived underwater as long as two weeks. When flooding happens, most kinds of rice plants cannot get enough oxygen, carbon dioxide or sunlight. But the scientists say crop loss depends on several conditions. These include soil conditions and plant age. Others include the amount of time the plant is underwater and the amount of fertilizer (肥料) used on the crop.

On a genetic (遗传的) map of rice, the scientists became interested in a group of three genes. They experimented with one of them, a gene known as Sub-One-A. They found that when this gene becomes very active, it improves the ability of rice to survive longer when rice is covered by water. They believe it succeeds because it affects the reaction to hormones (荷尔蒙). They control the ability of a flooded plant to survive. Placing the gene into rice plants that are especially good for conditions in India, researchers say the genetically engineered plants not only survived but also produced good crops.

The researchers are now trying to identify all the genes governed by the Sub-One-A gene. Being able to leave water on rice plants for an additional week might also help farmers prevent the growth of weeds. Less weed growth around their crops would mean less need for herbicide (除草剂) chemicals.

 

41. Crop loss depends on all the following conditions EXCEPT _______.

A. soil conditions and plant age

B. the amount of water the plant stands in

C. the amount of fertilizer used on the crop

D. the amount of time the plant is underwater

42. What is the final aim of this research?

A. To identify the gene that helps rice survive underwater.

B. To increase the ability of rice to fight against floods.

C. To help farmers spend less time removing weeds.

D. To make sure of enough food supplies.

43. What does the underlined word “They” in Paragraph 3 refer to?

A. Genes.                                             B. The experiments.

C. Genetically engineered plants.             D. Hormones.  

44. What would be the best title for the passage?

A. Rice research is going on in Laos and India

B. How to reduce the influence of floods on rice

C. Gene researchers work on flood-resistant rice

D. A great discovery in the agricultural field 

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