A、Listing and brainstorming.
B、Venn diagram and table.
C、Exemplification and listing.
D、Venn diagram and brainstorming.
完形填空 Can you really make out the difference between British Isles, Britain, United Kingdom and England? These terms are familiar to us, but meanwhile ____1_____to us Chinese. The British Isles are made up of two large ____2____: One is Britain and the other Ireland. Britain, or Great Britain, is the ____3____of the two islands, which is ___4_____ into three parts: England, Scotland and Wale.The United Kingdom (UK) is short for the United Kingdom of Great Britain and Northern Ireland. UK ____5___ Scotland, Wales and England (i.e. the whole of Britain), and also about one-sixth of Ireland, the northern part. The ____6____ of Ireland called the Republic of Ireland is another country. England is the largest of the four, and generally speaking, the richest section. Its capital is London, ____7____ is also the capital of the UK. London lies on the River Thames. Much of England is rather flat, although there are ____8____ in the northeast and in the center of the country. English people tend to use the ____9____ "England" and "English" when they mean "Britain" and "British". This sometimes upsets the Welsh and the Scots as they are not included. "Why don't they use 'Walsh' or '____10___' ?" they may wonder. London is beautiful. Today, you cannot deny the beauty, myth, and wonder of the River Thames, which has good ____11____. However,in the nineteenth century, in some books, the Thames was ____12____ as a grey, dirty, smutty, sooty, smoky river. These were not only existing in nineteenth century. It had ____13____ been like this for centuries,never clear. At that time, many ordinary people were ___14to cholera. This was the ____15____ disease of its day. Neither its cause nor its cure was understood. No one knew the disease just came from the ___16water. So many thousands of ___17_______people died every time there was an(a) ___18. Disasters like these always remain us unforgettable lessons. Now you know England is of course different from the UK. At present, the UK played an important part in the ____19____affairs. It is a member state of the United Nations, ____20____ the European Union and NATO. "The UN, the UK and the US often go hand in hand in the world," people joke. Do you think so? | ||||
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A、There are two main approaches to the evaluation of trace metal speciation-experimental measurement and computer modelling.
B、The experimental determination of speciation is hampered by a number of problems, such as sensitivity, disruption of the labile equilibrium of the system. Besides, it is tedious and time consuming .
C、The main shortcoming to the computational approach is the reliability of the data used. The results of the model are only as good as the parameters on which they depend and any shortcomings in either the analytical concentration of the system under investigation or in the thermodynamic data will result in a very misleading speciation profile.
D、The major advantages of computer modelling is that changes to the model can easily be made and thus the effect of say a 10% error in one of the component concentrations can very readily be investigated. Similarly, stability constant data may be varied over a range in order to see if this has any effect on the speciation profile. This type of operation also serves to identify those species which are of major importance. Last but not least, it is very quick and can easily be repeated.
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