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( )昼夜营业 ( )不准转弯
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In recent years a new farming revolution has begun, one that involves the manipulation of life at a fundamental level—the gene. The study of genetics has (51) a new industry called biotcehnology. As the name suggests, it (52) biology and modern technology through such techniques as genetic engineering. Some of the new biotech companies specialize in agriculture and are working feverishly to (53) seeds that give a high yield, that (54) diseases, drought and frost, and that reduce the need for hazardous chemicals, If such goals could be achieved, it would be most (55) . But some have raised concerns about genetically engineered crops. In nature, genetic diversity is created within certain (56) . A rose can be crossed with a different kind of rose, but a rose will never cross with a potato. Genetic engineering, (57) usually involves taking genes from one species and inserting them into another in an attempt to transfer a desired characteristic. This could mean, for example, selecting a gene which leads to the production of a chemical with anti-freeze (58) from an artic fish, and inserting it into a potato or strawberry to make it frost, resistant, in essence, then, biotechnology allows humans to (59) the genetic walls that separate species. Just like the green revolution, (60) some call the gene revolution contributes to the problem of genetic uniformity-some say even more so (61) geneticists can employ techniques such as cloning and (62) culture (培养) and processes that produce perfectly (63) copies. Concerns about the erosion of biodiversity, therefore, remain. Genetically altered plants, however, raise new (64) ,such as the effects that they may have on us and the environment. "We are tlying blindly into a new era of agricultural biotechnology with high hopes, few constraints, and little idea of the potential (65) ," said science writer Jeremy Rifkin.
In recent years a new farming revolution has begun, one that involves the manipulation of life at a fundamental level—the gene. The study of genetics has (51) a new industry called biotcehnology. As the name suggests, it (52) biology and modern technology through such techniques as genetic engineering. Some of the new biotech companies specialize in agriculture and are working feverishly to (53) seeds that give a high yield, that (54) diseases, drought and frost, and that reduce the need for hazardous chemicals, If such goals could be achieved, it would be most (55) . But some have raised concerns about genetically engineered crops. In nature, genetic diversity is created within certain (56) . A rose can be crossed with a different kind of rose, but a rose will never cross with a potato. Genetic engineering, (57) usually involves taking genes from one species and inserting them into another in an attempt to transfer a desired characteristic. This could mean, for example, selecting a gene which leads to the production of a chemical with anti-freeze (58) from an artic fish, and inserting it into a potato or strawberry to make it frost, resistant, in essence, then, biotechnology allows humans to (59) the genetic walls that separate species. Just like the green revolution, (60) some call the gene revolution contributes to the problem of genetic uniformity-some say even more so (61) geneticists can employ techniques such as cloning and (62) culture (培养) and processes that produce perfectly (63) copies. Concerns about the erosion of biodiversity, therefore, remain. Genetically altered plants, however, raise new (64) ,such as the effects that they may have on us and the environment. "We are tlying blindly into a new era of agricultural biotechnology with high hopes, few constraints, and little idea of the potential (65) ," said science writer Jeremy Rifkin.
Hawaii, the newest state in the United States, is a (21) of eight large islands and many small (22) in the Central Pacific Ocean, about 2,200 miles west of San Francisco. Hawaii was probably (23) about 750 A. D. , by (24) from the other Pacific islands. The first Europeans (25) Americans to visit it were the British Captain James Cook and his (26) in 1778. James named his discovery the Sandwich Islands (27) the sponsor of his expedition, the Earl of Sandwich. Twelve years later, the others from Europe and the new United States began to settle in the islands. These "westerners" brought (28) to Hawaii. They brought new diseases, which the Hawaiians had no (29) to; they brought alcohol, which many Hawaiians became (30) to; they brought a new religion which (31) the old values and forced the islanders to (32) their old culture and (33) to a new one. Many Americans settled in Hawaii, and in 1893, they (34) the queen and (35) Hawaii a republic. Sandford Dole, a missionary’s son, was made president. In 1898, the United States (36) the islands, and it became a (37) of the United States in 1900. On December 7th, 1941, the Japanese (38) Pearl Harbor, Hawaii. This attack (39) the entrance of the United States to the Second World War. In 1959, the United States Congress (40) Hawaii to statehood, making it the fiftieth state in the United States. For the first time in about 200 years, Hawaiians were able to participate in the electoral process.
Most of the people (invite) ______ to the party yesterday were my friends.
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