Recent studies on car scrapping have r__________ (brought up) the immportant quesiton as to whether CO2 emissions can be significantly reduced by taking old cars out of service. （请根据给出的首写字母，填入完整单词的适当形式，其意义与括号中的单词或短语相同）
There has been c____________(a lot of) interest in how background sounds such as music affect an individual’s ability to concentrate. （请根据给出的首写字母，填入完整单词的适当形式，其意义与括号中的单词或短语相同）
AIDS researchers have e_________(run into) a variety of unexpected problems in their efforts to develop an effective vaccine. （请根据给出的首写字母，填入完整单词的适当形式，其意义与括号中的单词或短语相同）
It is explicit in its signposting of the organization of the ideas in the text. As a writer of academic English, it is your responsibility to make it clear to your reader how various parts of the text are related. These connections can be made explicit by the use of different signaling words.
Currently the IMRAD（Introduction, Methods, Results And Discussion） structure is dominant for publishing papers in many fields of science.
Academic writing is more explicit about its structure and purposes (i.e., contains a noticeable amount of metadiscourse).
Academic writing use fairly short sentences with less complicted grammar.
Academic writing is more tolerant of asides or digressions.
Academic writing is relatively formal. In general this means that in an essay you should avoid the following:
What are the main features of academic writing?
Ideally, the application will save every single little change as soon as the user makes it, ___________, after each keystroke.
Papers must be handed in by the deadline. ______________ they will not be graded.
There are some slight variations in temperature, but ________________ 26 to 27ºC should be expected.
There are three major advantages of the design, ________________ cheapness, simplicity and availability.
Many software manufacturers in developed countries put up with widespread copyright violations in less developed countries and often even offer local versions of their products.