[单选题]（）is a method used in Critical Path Methodology for constructing a project schedule network diagram that uses boxes or rectangles, referred to as nodes, to represent activities and connects them with arrows that show the logical relationships that exist between them.
A.PERT
B.AOA
C.WBS
D.PDM

[单选题]critical path for a project is the series of activities that determine（ ）by which the projectcan be completed. 项目的关键路径是确定 项目可以完成的一系列活动 A.the earliest time 最早完成时间 B.the latest time 最迟完成的时间
A.the total time
B. 总时间
C.the free time
D. 自由时间 .

[单选题]What teaching method is used by the teacher if much of his/her class time is spent on drilling sentence patterns followed by exercises like repetition, memorization, mimicry, etc? A. The Natural Approach.
B． The Communicative Approach.

A.The Audio-lingual Metho

B.
C.

D.The Grammar-translation Method

[不定项选择题]根据以下材料，回答题 The Chinese have used a method called acupuncture(针灸) toperform operations for about 4,000 years without putting the patient to sleep.This involves placing flexible needles (针) into certainparts of the body. The needles used are available in a number of stores inChina and everyone may buy them. To learn how to use needle takes about onemonth of training. But to be skillful requires greater time. The person whoperforms the acupuncture knows how to put in the needles so the needles themselvesare not painful. This person also knows where to place the needles so thepatient feels no pain in the area where the operation is to be performed. Theneedles are not necessarily inserted near the place where the pain is to beprevented. In the past, a particular operation might require 25 or more needlesplaced in various parts of the body. But now this operation requires only 3 or4 needles. Today the Chinese doctors are trying tolearn more about acupuncture. They are trying to develop a convincing theory toexplain how the needles work in preventing pain, or why a needle in the wrist,for example, would prevent the pain in the area of the mouth. A patient who needs an operation is given achoice between having acupuncture or having one of the chemicals used forputting him to sleep. It has been estimated that over half of the patients chooseacupuncture because there is no sickness after the operation whereas (然而，反之) the chemical maymake the patient sick for a few hours or a day. To learn how to use the needles, ittakes a person ______查看材料
A.several months
B.a couple of weeks
C.a life time
D.almost one month

[单选题]Passage 2 Birds are a critical part of our ecological system. But more than ever, birds are threatened byhuman pollution and climate change. We need the birds to eat insects, move seeds and pollen around, transfer nutrients from sea toland, clean up after the mass death of the annual Pacific salmon runs, or when a wild animal fallsanywhere in a field or forest. How could we enjoy spring without the birds flitting busily in our garden or dropping by tocheck out the flowers in our urban window box Can you contemplate America without the soaringbald eagle, or even those scavengers like the pigeons and gulls that clean up discarded food scrapson our city streets and waterfronts How diminished our lives would be without them Scavenging eagles and condors need hunters to behave responsibly and bury, or remove, theremains of any shot deer peppered with fragments of lead bullets. Loons, ducks and other water birdswill be poisoned by lead bullets and lead fishing sinkers if we allow such objects to drop in theirfeeding space. All sea and shore birds, even the puffins and guillemots of the otherwise pristine Aleutians,need us to make sure that no other heavy metals, like mercury and cadmium, are dumped in riversand make their way across the oceans. Birds like the terns, knots and shearwaters that migrate between the far north and deep, deep,south of our planet need people everywhere to cease and desist from filling in their wetland fuelstops and rest stations, and from constructing golfing resorts and factories in their feeding andbreeding grounds. Seabirds are among the most endangered vertebrate species on the planet, with the InternationalUnion for Conservation of Nature classifying 97 species as globally threatened, and 17 in the highestcategory of critically threatened. Of greatest concern are the pelicans of the southern oceans and thespectacular, but slow-breeding albatross. Plastic bags must be eliminated from natural environments so sea and shore birds don′tmistakenly carry such debris back to feed their chicks, with invariably lethal consequences. Thealbatross, cormorants and herons need us to stop over-fishing and compromising their normal foodsupply. The pelicans, penguins and all the birds that inhabit, or visit, our coastlines need us to ensurethat we do not dump oil into gulfs and bays, or release so much carbon dioxide into the atmospherethat the oceans turn acidic and we lose the mussels and oysters, the mass of calcareous plankton thatfeeds so many creatures, and the coral reefs that nurture enormous numbers of edible species. Think about it: We share this small green planet. As they fly, feed and nest, the birds monitorthe health of the natural world for us, provided that we, in turn, make the effort to access that keyinformation. The birds and humans are both large, complex and ultimately vulnerable organisms that inhabitthe top of the food chain. At the end of the day, their fate will be our fate. Which of the following best describes the attitude
A.Humanistic.
B.Subjective.
C.Sentimental.
D.Recriminatory.

[不定项选择题]根据下面资料，回答题 Clothes play a critical part in the conclusions we reach by providing clues to who people are, who they are not, and who they would like to be. They tell us a good deal about the wearer′s background, personality, status, mood, and social outlook. Since clothes are such an important source of social information, we can use them to manipulate people′s impression of us. Our appearance assumes particular significance in the initial phases of interaction that is likely to occur. An elderly middle-class man or woman may be alienated by a young adult who is dressed in an unconventional manner, regardless of the person′s education, background, or interests. People tend to agree on what certain types of clothes mean. Adolescent girls can easily agree on the lifestyles of girls who wear certain outfits, including the number of boyfriends they likely have had and whether they smoke or drink_ Newscasters, or the announcers who read the news on TV, are considered to be more convincing, honest, and competent when they are dressed conservatively. And college students who view themselves as taking an active role in their interpersonal relationships say they are concerned about the costumes they must wear to play these roles successfully. Moreover, many of us can relate instances in which the clothing we wore changed the way we felt about ourselves and how we acted. Perhaps you have used clothing to gain confidence when you anticipated a stressful situation, such as a job interview, or a court appearance. In the workplace, men have long had well-defined precedents and role models for achieving success. It has been otherwise for women. A good many women in the business world are uncertain about the appropriate mixture of "masculine" and "feminine" attributes they should convey by their professional clothing. The variety of clothing alternatives to women has also been greater than that available for men. Male administrators tend to judge women more favorably for managerial positions when the women display less "feminine" grooming--shorter hair, moderate use of make-up, and plain tailored clothing. As one male administrator confessed, "An attractive woman is definitely going to get a longer interview, but she won′t get a job." In the workplace, women ___________.查看材料
A.should display less "masculine" grooming in order to get success in their career
B.don' t have a well-defined dress code
C.are submitting to an impossible standard of beauty and success
D.should enhance their posture by daily wearing make-up

[单选题]Open Shortest Path First (OSP F) was designed as an （ ） gateway protocol, for use in an autonomous system such as a local area network (LAN). It implements Dijkstra's algorithm, also known as the （ 请作答此空） path first algorithm. As a link-state routing protocol it was based on the link-state algorithm developed for the ARPANET in 1980 and the IS-IS routing protocol. OSPF was first standardised in 1989 as RFC 1131, which is now known as OSPF version 1.Routing protocols like OSPF calculate the shortest route to a destination through the network based on an algorithm. The first routing protocol that was widely implemented, the （ ）, calculated the shortest route based on hops, that is the number of routers that an IP packet had to traverse to reach the destination host. RIP successfully implemented dynamic routing, where routing tables change if the network topology changes. But RIP did not adapt its routing according to changing network conditions, such as data-transfer rate. Demand grew for a dynamic routing protocol that could calculate the fastest route to a destination. （ ） was developed so that the shortest path through a network was calculated based on the cost of the route, taking into account bandwidth, delay and load. Therefore OSPF undertakes route cost calculation on the basis of link-cost parameters, which can be weighted by the administrator. OSPF was quickly adopted because it became known for reliably calculating routes through large and complex local area networks.As a link state routing protocol, OSPF maintains link state （ ）, which are really network topology maps, on every router on which it is implemented. The state of a given route in the network is the cost, and OSPF algorithm allows every router to calculate the cost of the routes to any given reachable destination. Unless the administrator has made a configuration, the link cost of a path connected to a router is determined by the bit rate (1 Gbit/s, 10 Gbit/s, etc) of the interface. A router interface with OSPF will then advertise its link cost to neighbouring routers through multicast, known as the hello procedure. All routers with OSPF implementation keep sending hello packets, and thus changes in the cost of their links become known to neighbouring routers. The information about the cost of a link, that is the speed of a point to point connection between two routers, is then cascaded through the network because OSPF routers advertise the information they receive from one neighbouring router to all other neighbouring routers. This process of flooding link state information through the network is known as synchronisation. Based on this information, all routers with OSPF implementation continuously update their link state databases with information about the network topology and adjust their routing tables.OSPF has become a popular dynamic routing protocol. Other commonly used dynamic routing protocols are the RIP and the Border Gateway Protocol (BGP). Today routers support at least one interior gateway protocol to advertise their routing tables within a local area network. Frequently implemented interior gateway protocols besides OSPF are RIP, IS-IS, and the proprietary Interior Gateway Routing Protocol (IGRP) by Cisco.
A.shortest
B.longest
C.first
D.begin