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Concrete is a composite material composed of aggregate bonded together with a fluid cement that cures to a solid over time. Concrete is the second-most-used substance in the world after water, [1] and is the most widely used building material. [2] Its usage worldwide, ton for ton, is twice that of steel, wood, plastics, and aluminium combined. [3]
EF compares the EFSET's accuracy to the most widely used high stakes standardized English tests: TOEFL, IELTS, and Cambridge International Examinations. [ 2 ] There are three versions of the EFSET: a 15-minute test which is basically a quiz type test, a 50-minute test which assesses the reading and listening skills, and a 90-minute test which ...
IELTS Academic and General Training both incorporate the following features: IELTS tests the ability to listen, read, write and speak in English. The speaking module is a key component of IELTS. It is conducted in the form of a one-to-one interview with an examiner which can occur face to face or even through a video conference.
It assesses grammar, listening, vocabulary, and reading in addition to writing prompts that can be graded by the administering institution. iTEP Academic and SLATE each have a "core" version and a "plus" version. The "core" versions are Internet-based, last 60 minutes, and test reading, grammar and listening.
Cambridge Assessment English or Cambridge English develops and produces Cambridge English Qualifications and the International English Language Testing System ().The organisation contributed to the development of the Common European Framework of Reference for Languages (CEFR), the standard used around the world to benchmark language skills, [2] and its qualifications and tests are aligned with ...
A score on the Cambridge English Scale for each skill (Reading, Writing, Listening and Speaking) and for Use of English, for the exams in which it is tested. For Cambridge English A2 Key and A2 Key for Schools, a score is reported for each of the three test papers (Reading and Writing, Listening and Speaking).
In philosophy and the arts, a fundamental distinction exists between abstract and concrete entities. While there is no universally accepted definition, common examples illustrate the difference: numbers , sets , and ideas are typically classified as abstract objects, whereas plants , dogs , and planets are considered concrete objects.
Concrete has a very low coefficient of thermal expansion, and as it matures concrete shrinks. All concrete structures will crack to some extent, due to shrinkage and tension. Concrete which is subjected to long-duration forces is prone to creep. The density of concrete varies, but is around 2,400 kilograms per cubic metre (150 lb/cu ft). [1]