[填空题]

No single element has tantalized and tormented the human imagination more than the shimmering metal known by the chemical symbol Au. For thousands of years the desire to possess gold has driven people to extremes, fueling wars and conquests, girding empires and currencies, leveling mountains and forests. (71) Yet its chief virtues—its unusual density and malleability along with its imperishable shine—have made it one of the world’s most coveted commodities, a transcendent symbol of beauty, wealth, and immortality. From pharaohs (who insisted on being buried in what they called the "flesh of the golds") to the forty-niners (whose mad rush for the mother lode built the American West) to the financiers (who, following Sir Isaac Newton’s advice, made it the bedrock of the global economy); (72)
Humankind’s feverish attachment to gold shouldn’t have survived the modern world. Few cultures still believe that gold ca

[填空题]

No single element has tantalized and tormented the human imagination more than the shimmering metal known by the chemical symbol Au. For thousands of years the desire to possess gold has driven people to extremes, fueling wars and conquests, girding empires and currencies, leveling mountains and forests. (71) Yet its chief virtues—its unusual density and malleability along with its imperishable shine—have made it one of the world’s most coveted commodities, a transcendent symbol of beauty, wealth, and immortality. From pharaohs (who insisted on being buried in what they called the "flesh of the golds") to the forty-niners (whose mad rush for the mother lode built the American West) to the financiers (who, following Sir Isaac Newton’s advice, made it the bedrock of the global economy); (72)
Humankind’s feverish attachment to gold shouldn’t have survived the modern world. Few cultures still believe that gold ca

[单项选择]American life has always had its element of change, of movement, some say of restlessness, and this is still so now.（）
A. 美国人在生活中一直喜变好动，有人说这是不安分守己，这一点至今没有改变。
B. 据有些人说，要到美国生活，就要有变化，喜爱运动，放弃休息，一直不得安宁。
C. 美国人的生活总少不了变化、迁居，如人所说，不安于现状，至今依然如此。
D. 据有些人说，在美国生活有变化，有运动，还有些不安分，直到现在仍然是这样的。
E. 美国人的生活总是具有变化、迁移，有人说不安分守己。这一点至今依然如故。

[单项选择]As welfare reform has （　） millions of single mothers like Patino into the workforce since 1996, questions about its effects on families have loomed large.
A. nudged
B. propelled
C. divested
D. bumped

[简答题]Transposon(or transposable element)

[简答题]转座元件(transposable element)

[简答题]应答元件(response element)

[单项选择]Inventory
Inventory belongs to an important element of the cost of doing business in a large company. If a company is assembling cars, they must have a large number of parts in hand so that the assembly line does not stop because one part is missing. If cars are going down the assembly line and one person is supposed to fasten wheels on to the car, the whole line will stop if he runs out of fasteners. This means that several hundred men will be waiting while someone must find fasteners for the wheel. So there must be a sufficient number of parts of all sorts nearby in order to keep the car assembly line running smoothly.
A large supply of spare parts is very expensive, so a company will try to keep its inventory as low as it can without finding it necessary to stop production for lack of a part.
In a planned company, i.t was often difficult to secure spare parts and so many companies ordered many extra parts and kept large supplies of parts so that if a mistake was made
A. so many companies manufacture them all by themselves
B. so many companies have to stop the production lines while waiting
C. so many companies place large orders for emergencies
D. so many companies feel quite headache about this problem

[填空题]The important metallic chemical element in making stainless steel is ______.

[单项选择]Hydrogen is the fundamental element of the universe （） it provides the building blocks from which the other elements are produced.
A. so that
B. but that
C. in that
D. provided that

[填空题]The most important element for an economic system is ______.