< random >
It is He who sends down water from heaven, which provides drink for you and brings forth trees on which your herds feed. 10 and by virtue of which He causes crops and olives and date-palms and grapes and all kinds of fruit to grow for you. Surely in this there is a great Sign for those who reflect. 11 He harnessed the day and night for you, as also the sun, the moon and the stars, by His command. In this are signs for men who understand. 12 And the things on this earth which He has multiplied in varying colours (and qualities): verily in this is a sign for men who celebrate the praises of Allah (in gratitude). 13 It is He who subjected to you the sea, that you may eat of it fresh flesh, and bring forth out of it ornaments for you to wear; and thou mayest see the ships cleaving through it; and that you may seek of His bounty, and so haply you will be thankful. 14 God has fixed the mountains on earth lest you should be hurled away when it quakes. Therein He has also made rivers and roads so that you will find your way. 15 And waymarks; and by the star they are guided. 16 Is He who creates as he who does not create? Will you not remember? 17 If you count the favours of God you will not be able to calculate. Assuredly God is forgiving and kind. 18 And Allah knows what you conceal and what you declare. 19 Those you call on besides God cannot create anything. They are themselves created. 20 (They are things) dead, lifeless: nor do they know when they will be raised up. 21
< random >
ملاحظات وتعليمات
Notes and Instructions
كيف تعمل منظومة تمارين الحفظ؟ عند أدنى مستوى 0، تكون كل الكلمات ظاهرة. بينما يُخفي أعلى مستوى 9 كل الكلمات. فكيف تعمل المستويات المتوسطة، مثل 3، على سبيل المثال؟ قد تعتقد بأن المنظومة تخفي 3 من كل تسع كلمات بدقة. ليس تماما! في المستوى 3، لكل كلمة فرصة اختفاء بنسبة 3 من 9، و6 من 9 لتكون ظاهرة. بمعنى آخر، من الممكن، ولكن باحتمال شبة معدوم، أن تكون جميع كلمات المستوى 3 مخفية، أو أن تكون جميعها ظاهرة! وكذلك أيضًا، ففي المستويات المتوسطة، وبما يتناسب مع مستوى الصعوبة، يمكن أن تكون المخابئ غير كاملة أو شفافة جزئيًا بحيث تظهر الكلمات جزئيًا تحتها.
How does the memorization exercise algorithm work? At the lowest level 0, all words are visible. While the highest level 9 hides all words. What about at mid-level, like 3, for example? You might think that the algorithm hides precisely 3 out of every nine words. Not quite! At level 3, each word has a 3 out of 9 chance to hide, and 6 out of 9 to be visible. In other words, it is possible, but highly unlikely, for all words at level 3 to be hidden, or, that all of them to be visible! Also, at mid-levels, and in proportion to the difficulty level, hideouts can be partially incomplete or transparent so that words may be partially visible underneath.