At the same time, these old topics cannot be comprehensive, objective, scientifically reflect the mathematics learning capability.

同时，这些旧的题型也不能全面，客观，科学地反映出数学的学习能力。

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The Berlin-based startup's high quality app is the first educational application with both comprehensive and affordable learning material for iPad users that facilitates entertaining and multi-media language learning any time, any place.

ENGADGET: Babbel launches subscription-based language learning program for iPad