[单项选择]What is less well understood by the general public is that- there have been a number of trends which have further contributed to the diminishment of excavation as an activity. As Bahn puts it "there have been two major trends over time: first, excavation has become far slower and more painstaking .... The work is incredibly meticulous... Secondly, we can learn far more from what we have." The conclusions to be drawn from this would appear to be contradictory.
As technology improves we are able to undertake a wide variety of analysis from microscopic, radio carbon dating or even DNA ’samples. The ability to determine more, from fewer samples again suggests that less excavation is required. Moreover, more often than not the balance of effort now rests with the specialist analysis such as pollen experts and dating analysis rather than the excavators. So, again some of the requirements for extensive excavation have diminished through the advancement of other analytical techniques and
A. The apply of radio carbon dating.
B. More acquisition of artifacts.
C. Emergence of processual archaeology.
D. Development of surface survey technique.

[单项选择]What is less well understood by the general public is that- there have been a number of trends which have further contributed to the diminishment of excavation as an activity. As Bahn puts it "there have been two major trends over time: first, excavation has become far slower and more painstaking .... The work is incredibly meticulous... Secondly, we can learn far more from what we have." The conclusions to be drawn from this would appear to be contradictory.
As technology improves we are able to undertake a wide variety of analysis from microscopic, radio carbon dating or even DNA ’samples. The ability to determine more, from fewer samples again suggests that less excavation is required. Moreover, more often than not the balance of effort now rests with the specialist analysis such as pollen experts and dating analysis rather than the excavators. So, again some of the requirements for extensive excavation have diminished through the advancement of other analytical techniques and
A. More analysis can be done with less samples.
B. Excavation diminishes with improved technology.
C. Better materials can be obtained from painstaking excavation.
D. Excavation is time-consuming but fruitless.

[单项选择]　　One reason why a sheep, a less well-understood experimental subject than the laboratory mouse, should have proved easier to clone may stem from differences in the initial stages of the two species’’ embryonic development. After reaching maturity in the ovary of the mother, the unfertilized eggs of all mammals accumulate a supply of proteins, and the means of producing fresh protein. In this way, the mammalian egg brings with it a larder for the embryo to make use of until its own genes activate and supply this requirement themselves. The sheep embryo disposes of its store properly and need not depend on its own genes until the sixteen-cell stage, four cell divisions successive to fertilization, while in contrast, the mouse embryo commences this process more precociously, becoming reliant on the activity of its own genes after just the first division when the fertilized egg becomes two cells. Therefore, a foreign nucleus introduced into a sheep egg exploits a respite in its host’’s bi
A. advancing an argument against human cloning based on evidence from cloning experiments performed on lower life forms
B. measuring the technical and ethical limitations of the embryonic cloning process in mammals
C. refuting arguments against human cloning through the use of hard scientific evidence
D. illuminating the critical ethical distinctions in process between human cloning and sheep cloning
E. describing how the ethical issues in the quest for human cloning have given rise to new models of embryonic development

[单项选择]Using a public telephone may well be one of the minor irritations of life, demanding patience, determination and a strong possibility of failure, together on occasion with considerable unpopularity.
The hopeful caller (shall we call him George ) waits till six o’clock in the evening to take advantage of the so-called "cheap rates" for a long-distance call. The telephone box, with two broken panes of glass in the side, stands at the junction of two main roads with buses, lorries and cars roaring past. It is pouring with rain as George joins a queue of four depressed-looking people. Time passes slowly and seems to come to a standstill while the person immediately before George carries on an endless conversation, pausing only to insert another coin every minute or so.
Eventually the receiver is replaced and the caller leaves the box. George enters and picks up one of the directories inside, only to discover that someone unknown has torn out the very page he needs. Nothing fo
A. instructions about how to use a public call box
B. advice about how to deal with public telephone problems
C. criticism of the efficiency of telephone system
D. an account of possible annoyances in using a public telephone

[填空题]Using a public telephone may well be one of (1) of life, demanding patience, determination and (2) , together on occasion with considerable unpopularity.
The hopeful caller (shall we call him George )waits till six o’clock in the evening to (3) the so-called ’cheap rates’ for (4) . The telephone box, with two broken panes of glass in the side, stands (5) two main roads with buses, lorries and cars roaring past. It is pouring with rain as George joins a queue of four depressed-looking people. Time passes slowly and seems to come to (6) while the person immediately before George carries on an endless conversation, pausing (7) another coin every minute or so.
Eventually the receiver is replaced and the caller leaves the box. George enters and picks up one of the directories inside, (8) that someone unknown has tom out the very page he needs. Nothing for it but to dial Directory Enquiries, (9)