TKT Module 1: Differences between L1 and L2 learning practice test 2

Gap-fill test | TKT Course

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Select the correct answers from the drop-down lists.
Some , such as the ability to grasp objects or walk are determined because all children, regardless of their culture, learn to do it pretty much at the same stage in their .
Babies in all learn to talk between 18 and 28 months of life.
Some behaviours are never naturally so if you never learn to ride a bicycle or play a decent game of chess, you will not magically develop the ability to do so, no matter how long you live.
In their languages, children often use forms and then revert to an inaccurate form before once more acquiring the irregular form. So, for example, a child may produce The mice ran up the clock, then begin to say The mouses runned up the clock before settling on the correct version later.
If this is true, the importance is obvious: it means that language cannot be being acquired by simple and practice. If it were, children would never produce something like *comed instead of came for the simple reason that they would never it.