How heavy is the synchronous guidance and optimization training 19 page in the second volume of the third grade?

The second volume of synchronous guidance and optimization training in grade three 19 weighs 300 grams.

New century publishing house 2022 synchronous learning guidance and optimization training for third-grade English people's education edition answers are sorted out for everyone. This book is an auxiliary teaching book published by New Century Publishing House. Stick to the main points of teaching materials, consolidate basic knowledge, improve problem-solving ability and optimize grades in an all-round way. It is a good helper for teachers and classmates to learn textbooks simultaneously. Students who have finished the exercises come to check their answers and see how they are doing.

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