revises the form and use of the simple past tense

... • Tell her that you love her • Please, come to the party • Have a drink To invite Use of the emphatic with the imperative You can use 'do' before the imperative to emphasize what you want to say: ... emphasize what you want to say: Example: • Do write down your name • Do think of our offer Related page Exercise: the imperative ...

Ngày tải lên: 30/08/2016, 10:53

... 4 The past continuous tense : ( khứ tiếp diễn ) _ Formation : ( công thức ) S + was / were + V-ing S + wasn’t / weren’t + ... :00 to 11 : 00 she was reading in her room + Hành động xảy lúc khứ e.g : While I was watching TV, ther were playing football outside (1) (1) + Một hành động diễn khứ, bị hành động khác cắt ngang...

Ngày tải lên: 30/10/2013, 14:11

Ngày tải lên: 21/10/2015, 04:07

... factory a year ago What they(do) yesterday? Thay(chat) _with their brother She(do) her homework last night? Yes, she I(see) that film two months ago Nina(come) _ to the park late last ... động từ tận “e” ta them ‘d’ 2/ tận phụ âm ‘y’ ta phải biến ‘y’ thành ‘I’ them ‘ed’ 3/ động từ phát âm âm tiết mà tận nguyên âm phụ âm ( ngoại trừ w,x,y ) ta phải gấp đôi phụ âm them ‘ed’ IV/ Exercise ... Exercise ( chia dạng động từ ngoặc ) I ( not/go) to work yesterday beacause I ( not/be) very well Na’s father(teach) _ him how to drive when he was 17 you(play) volleyball...

Ngày tải lên: 21/04/2016, 14:08

... tasted looked - thought drank - forgot caught saw played - didn’t play found 10 had 11 didn’t understand - held 12 fell 13 hit 14 didn’t catch 15 dived 16 didn’t put 17 rolled 18 taught 19 needed 20...

Ngày tải lên: 25/08/2016, 17:32

... knowledge of socio-cultural rules of language and of discourse This type of competence reveals an understanding of the social context in which language is used, of the roles of the participant, of the ... see the distinctive feature of the method, i.e the sentence is the basic unit of teaching and language practice and much of the lesson is devoted to translating sentences into and out of the ... task-as-workplan, i.e the designed task with the intension of the designer and task-as-process, i.e the learners actual performance of the task Then, these two terms have widely used by other researchers...

Ngày tải lên: 28/03/2015, 08:50

... years through the development and use of a succession of live food organisms as feed for the developing larvae The aim of the present manual was therefore to review and summarise the latest developments ... permission of the copyright owner Applications for such permission, with a statement of the purpose and extent of the reproduction, should be addressed to the Director, Information Division, Food and ... concerning the production and use of the major live food organisms currently employed in larviculture worldwide This document has been prepared within the framework of the aquaculture nutrition and...

Ngày tải lên: 15/12/2013, 00:15

... between the culture medium and the air The latter is of primary importance as the air contains the carbon source for photosynthesis in the form of carbon dioxide For very dense cultures, the CO2 ... the advantage of allowing control of the quality of the cultures The major difficulty in microscopic counts is reproducibility, which is a function of the sampling, diluting, and filling of the ... extensive research efforts, the use of artificial diets in the culture of bivalve molluscs is still very limited The advantages and disadvantages of each of the three classes of replacement diets for...

Ngày tải lên: 15/12/2013, 00:15

... facilitates on one hand the possibilities for automatic feeding but on the other hand requires the use of aeration and cold storage The following standard culture procedure has been developed and tested ... the lorica The shape of the lorica and the profile of the spines and ornaments allow the determination of the different species and morphotypes (see 3.4.) The rotifers body is differentiated ... consisting of the head, trunk and foot (Fig 3.1.) The head carries the rotatory organ or corona which is easily recognized by its annular ciliation and which is at the origin of the name of the Rotatoria...

Ngày tải lên: 15/12/2013, 00:15

... to feet and feathers of birds, and when ingested they remain intact for at least a couple of days in the digestive tract of birds Consequently the absence of migrating birds is probably the reason ... salinity is the common feature determining the presence of Artemia, the impact of other parameters (temperature, primary food production, etc.) may at most affect the abundance of the population and ... expansion of aquaculture production in the 1970’s, the demand for Artemia cysts soon exceeded the offer and prices rose exponentially, turning Artemia into a bottleneck for the expansion of the hatchery...

Ngày tải lên: 15/12/2013, 00:15

... example, for the culture of carp larvae during the first two weeks, the use of decapsulated cysts constitutes a saving of over one third in the amount of Artemia cysts used, compared to the use of live ... and hatchability Hatchability of cysts is largely determined by the conditions and techniques applied for harvesting, cleaning, drying and storing of the cyst material The impact of most of these ... release over 80% of their cellular water, and upon interruption of the aeration, the now coffeebean shaped decapsulated cysts settle out After harvesting of these cysts on a mesh screen they should...

Ngày tải lên: 15/12/2013, 00:15

... 1986) On the other hand, instar II stages may be more susceptible to digestive enzyme breakdown in the gut of the predator since these enzymes can also penetrate the digestive tract of the Artemia ... generally used for feeding the late larval and postlarval stages of penaeids Freshly-hatched nauplii are usually offered at the start of the first mysis stage, and sometimes even earlier at the zoea-mysis ... and swallow their prey in one bite the size of the nauplii is particularly critical For example, fish larvae that are offered oversized Artemia nauplii may starve because they cannot ingest the...

Ngày tải lên: 15/12/2013, 00:15

... influence the feeding behavior of Artemia by affecting the filtration rate, ingestion rate and/ or assimilation: including the quality and quantity of the food offered, the developmental stage of the ... (1992) The system does not require the use of feeding pumps and involves minimal care The pilot system consists of six oval raceway tanks of m3 (see above) and six reservoir tanks of the same ... down the DHA as is the case in nauplii There is however, an alternative method that takes profit of the specific aspects of ongrown Artemia: instead of adding the enrichment emulsion at the end of...

Ngày tải lên: 15/12/2013, 00:15

... the acidity of the bottom The use of organic fertilizers increases the risk of infections This risk can be reduced by composting the manure before use One of the main disadvantages of organic ... soils, often found in mangrove areas When exposed to the air, the pyrite of these soils oxidizes to form sulfuric acid Of course liming of these soils is possible However, the quantities of lime ... to the effect of diapause or simply to the viability of the embryo The most common diapause deactivating methods used are described in chapter 4.2.1.4 However, before implementing any of these...

Ngày tải lên: 15/12/2013, 00:15

... effective and rapid the filtration Hence, the upper limit of the dimensions of the nets depends on the ease of handling rather than anything else The effectiveness of filtering is also influenced by the ... filtration and prevent losses due to the narrow and strong back current The longer the distance between the propeller and the net, the wider and shorter the net can be The distance between the propeller ... gates The amount of zooplankton collected depends on the zooplankton concentration in the water flowing out of the reservoir and on the volume of the water leaving the reservoir Again, the nets...

Ngày tải lên: 15/12/2013, 00:15

... the animals have migrated to the top of the tube, where they can be collected with the use of a pipet onto a 100 µm mesh screen After rinsing with seawater, the nematodes can then be fed to the ... particles from the water The efficiency of the filter allows even the uptake of bacteria (approx 1µm) In a study on the food quality of freshwater phytoplankton for the production of cladocerans, ... Fertilization of the pond with organic manure instead of mineral fertilizers is preferred because cladocerans can utilize much of the manure directly in the form of detritus On day 12 the water level...

Ngày tải lên: 15/12/2013, 00:15

... information and education to the public and to users about the environmental consequences of the choice of particular activities and products, their use and ultimate disposal; (b) The development and ... subject-matter of the dispute 14 Unless the arbitral tribunal determines otherwise because of the particular circumstances of the case, the expenses of the tribunal, including the remuneration of its ... for the assessment of the toxicity of hazardous substances and the noxiousness of pollutants; (b) Improved knowledge on the occurrence, distribution and environmental effects of pollutants and the...

Ngày tải lên: 18/02/2014, 04:20

... funds The number of households owning mutual funds decreased slightly in 2011 The percentage of U.S households owning mutual funds has stayed about the same since 2002 The current estimate of the ... the member of the household who was the sole or co-decisionmaker most knowledgeable about the household’s savings and investments The standard error for the 2011 sample of households is ± 1.5 percentage ... Indeed, much of the growth in the number of households owning mutual funds through tax-deferred accounts has occurred among those for whom this is their only form of fund ownership Of the 47.5 million...

Ngày tải lên: 19/02/2014, 09:20

... Distribution of Mutual Fund–Owning Households and All U.S Households Percent distribution of U.S households owning mutual funds and all U.S households by household income, 1998–2012 Share of U.S households ... 55 to 64 65 or older Age of head of household1 Age is based on the age of the sole or co-decisionmaker for household saving and investing For the complete time series of data from 1994 through ... Indeed, much of the growth in the number of households owning mutual funds through tax-deferred accounts has occurred among those for whom this is their only form of fund ownership Of the 49.3 million...

Ngày tải lên: 19/02/2014, 09:20