题目
The discovery and utilization of fire, a simple energy source with many profound uses, was a turning point in the technological evolution of mankind. The exact date of its discovery is not known; evidence of burnt animal bones at the Cradle of Humankind suggests that the domestication of fire occurred before 1,000,000BCE; scholarly consensus indicates that Homo erectus had controlled fire by between 500,000BCE and 400,000BCE. Fire, fueled with wood and charcoal, allowed early humans to cook their food to increase its digestibility, thereby improving its nutrient value and broadening the number of foods that could be eaten.
Other technological advances made during the Paleolithic (旧石器时代的)era were clothing andshelter; the adoption ofboth technologies cannot be dated exactly, but they were key to humanity's progress.
As the Paleolithic era progressed, dwellings became more sophisticated and more elaborate; as early as 380,000BCE, humans were constructing temporary wood huts. Clothing, adapted from the fur and hides of hunted animals, helped humanity expand into colder regions; humans began to migrate out of Africa by 200,000BCE and into other continents.
1.Which of the following statements is NOT true about the tools?()
A.The earliest tools were developed to aid early humans.
B.The earliest direct evidence of tool usage dates back to 2.5 million years ago.
C.The history of primitive tools is older than humankind.
D.Archaeologists have uncovered tools made more than two million years ago.
2.The turning point in the technological evolution of mankind is.()
A.the use of primitive tools by humanity ancestors
B.the adaptation of clothing from the fur and hides of hunted animals
C.the discovery and utilization of fire
D.the construction of temporary wood huts
3.The technological advances in clothing and shelter.()
A.were very important to humanity's progress
B.can be dated exactly
C.can be dated as early as 380,000BCE
D.helped people to move to any places they like
4.Which of the following can best replace the word "hides” in the third paragraph?()
A.leathers
B.hairs
C.places
D.skins
5.Which of the following is the best title for this passage?()
A.The discovery and utilization of fire.
B.The discovery of primitive tools.
C.The prehistory of technology.
D.The technological evolution of mankind.
第1题
A. Switches 1, 2, 3, and 6 will part icipate in the multicast tree once pruning has taken place.
B. Switches 2 and 6 will participate in the multicast tree once pruning has taken place.
C. Switches 1, 2, 3, and 6 will participate in the multicast tree.
D. The multicast server is the rendez vous point of the multicast tree.
第2题
编写一个程序实现小型公司的工资管理。该公司主要有4类人员.即经理(manager) .技术人员(technician)、销售员(salesman)、销售经理(salesmanager)。这些人员都是职员(employee),有编号、姓名、月工资信息。月工资的计算方法是经理固定月薪8000元,技术人员每小时100元,销售员按当月销售额的4%提成,销售经理既拿固定月工资5000元又拿销售提成,销售提成为所管辖部门当月销售额的5%。要求编程计算月T资并显示全部信息。
第7题
In history, there were 5 American presidents were killed.()
第8题
China is ______ with a long history of civilization. (bless)
第9题
The history of nursing _____ the history of man.
A、as old as
B、 is old, also old is
C、that is as old as
D、is as old as
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