2022福建职称英语考试真题卷(1).docx
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1、2022福建职称英语考试真题卷(1)本卷共分为1大题50小题,作答时间为180分钟,总分100分,60分及格。一、单项选择题(共50题,每题2分。每题的备选项中,只有一个最符合题意) 1.United Nations A major segment of the Untied Nations is the General Assembly, which consists of representatives from all governments that have ratified the UN Charter. As of 1995,185 states had membership i
2、n the general Assembly. Additionally, the Vatican, Switzerland, and the Palestine Liberation Organization have nonvoting observer status in the General Assembly. The General Assembly approves the UNs budget, acts with the Security Council to select the Secretary-general and judges of the Internation
3、al Court of Justice, and passes resolutions on issues ranging from self-determination and colonialism to womens rights and the global distribution of wealth. The General Assembly can meet and vote on any subject, unless the Security Council is dealing with it (or at least pretending to). However, it
4、s decisions only carry moral forceunlike the Councils. Theyre not binding in international laws. But the Assembly votes are an important opinion poll on how and what the majority of the world thinks about issues. Important questions need a two-thirds vote of the Assembly to pass. The question of wha
5、t is an important question isnt important. Its decided by the delegates themselvesby a simple majority. Although the General Assembly has not recognized authority to enforce its conclusions on anything other than internal UN matters, it makes its viewpoints on issues that are brought before it is kn
6、own in one of the three ways. A General Assembly declaration is a broad statement of general principle such as the Universal Declaration of Human Rights, passed in 1948. Declarations are often put forward as an expression of an ideal, in practice they are regularly ignored. A General Assembly resolu
7、tion is essentially a document that recommends that member states take a particular policy action. States claim sovereignty and make their own decisions as to whether they will follow a General Assembly resolution. In some cases, however, if many states implement a particular resolution, other state
8、s that may not wish to act on the resolution may feel themselves pressured to do so anyway. At the very least, a resolution has the effect of legitimizing the policies of those states that wish to comply with the resolution. Finally, a General Assembly convention, or treaty, has two meanings. The mo
9、re comprehensive convention refers to multilateral treaties voted on by the General Assembly that, upon passage by the General Assembly, are carried back to the capitals of member states for ratification by whatever means each state uses domestically. In other cases, a General Assembly convention re
10、fers specifically to a treaty signed between the United Nations and the government of a nation-state, as when in 1956 Egypt agreed to allow United Nations peacekeeping forces to enter Egyptian territory.The General Assembly makes its viewpoints in the General Assembly ratification.ARightBWrongCNot M
11、entioned 2.On Antibodies Substances foreign to the body, such as disease-causing bacteria and viruses and other infectious agents, are recognized by the body s immune system as invaders. Our natural defenses against these infectious agents are antibodies, proteins that seek out the antigens (抗原) and
12、 help destroy them. Antibodies have two very useful characteristics. First, they are extremely specific; that is, each antibody binds to and attacks one particular antigen. Second, some antibodies, once activated by the occurrence of a disease, continue to confer resistance against that disease. Cla
13、ssic example are the antibodies to the childhood diseases of chickenpox(水痘) and measles. The second characteristic of antibodies makes it possible to develop vaccines. A vaccine (痘苗) is a preparation of killed or weakened bacteria or viruses that, when introduced into the body, stimulates the produc
14、tion of antibodies against the antigens it contains. It is the first trait of antibodies, their specificity, that makes monoclonal antibody technology so valuable. Not only can antibodies be used therapeutically(在治疗上), to protect against disease; they can also help to .diagnose a wide variety of ill
15、nesses, and can detect the presence of drugs, viral and bacterial products, and other unusual or abnormal substances in the blood. Given such a diversity of uses for these diseased-fighting substances, their production in pure quantities has long been the focus of scientific investigation. The conve
16、ntional method was to inject a laboratory animal with an antigen and then, after antibodies had been formed, collect those antibodies from the blood serum(血清) (Antibody containing blood serum is called antiserum (抗血清). There are two problems with this method: It yields antiserum that contains undesi
17、red substances, and it provides a very small amount of usable antibody. Monoclonal antibody technology allows us to produce large amounts of pure antibodies. in the following way: we can obtain cells that produce antibodies naturally; we also have available a class of cells that can grow continually
18、 in cell culture (培养). If we form a hybrid (混血儿) that combines the characteristic of immortality(永生)with the ability to produce the desired substance, we would have, in effect, a factory to produce antibodies that work around the clock. In monoclonal antibody technology, tumor cells that can replica
19、te (重复) endlessly are fused with mammalian cells that produce an antibody. The result of this cell fusion is a hybridoma (杂交瘤), which will continually produce antibodies. These antibodies are called monoclonal because they come from only one type of cell, the hybridoma cell; antibodies produced by c
20、onventional methods, on the other hand, are derived from preparations containing many kinds of cells, and hence are called polyclonal. An example of how monoclonal antibodies are derived is described below. A myeloma is a tumor of the bone marrow (骨髓) that can be adapted to grow permanendy in cell c
21、ulture. When myeloma cells were fused with antibody-producing mammalian spleen cells, it was found that the resulting hybrid cells, or hybridomas, produced large amounts of monoclonal(骨髓瘤) antibody. This product of cell fusion combined the desired qualities of the two different types of cells: the a
22、bility to grow continually, and the ability to produce large amounts of pure antibody. Because selected hybrid cells produce only one specific antibody, they are more pure than the polyclonal antibodies produced by conventional techniques. They are potentially more effective than conventional drugs
23、in fighting disease, since drugs attack not only the foreign substance but the bodys own cells as well, sometimes producing undesirable side effects such as nausea(恶心) and allergic reactions. Monoclonal antibodies attack the target molecule and only the target molecule, with no or greatly diminished
24、 side effects.The polyclonal antibodies are different from the monoclonal ones in all the following ways except that_.Athe productive techniques are differentBthe former contains some undesired substancesCthe former attacks the foreign substanceDthe former produces side effects, that is, attack the
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