電子課程

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In this lesson, you can find exercises that can help you learn words for different farm animals.

Improve your vocabulary by learning about some of the most important environmental problems.

了解计算机科学先驱艾伦·图灵。

In this lesson, you are going to learn about Thanksgiving that is celebrated mainly in the US and Canada.

This lesson is going to show you how to speak about pros and cons while helping to improve your vocabulary for money.

Step into the magical world of fairy tales and boost your vocabulary.

Improve your writing skills with this lesson about effective blog writing.

Immerse yourself in the captivating world of books while you’re improving your vocabulary about reading.

您可以了解饱和烃的分子结构和命名法。

您可以了解法国浪漫主义最重要的诗人、小说家和剧作家之一。

This digital lesson will greatly enhance your vocabulary and also provide some exciting speaking topics related to films.

This lesson can help you become an expert in writing film or book reviews.

Enrich your vocabulary with this lesson about living in the city compared to living in the country.

In this lesson, we are going to improve vocabulary skills while checking out interesting facts about Valentine’s Day.

This lesson will help you become an expert in using the narrative tenses.

In this lesson, we are going to learn musical instruments vocabulary.

In this lesson, we are going to learn what school subjects you can study at school and what objects you can find there.

您可以了解乙烯的性质、分子结构、典型反应和使用领域。

了解饱和烃的物理和化学性质及其用途。

在这节课上，您可以了解阿伏伽德罗常数。

了解输入能量，有用的输出能量和效率。

科学实验室使用什么设备以及必须遵循哪些规则？

了解在自然科学领域表现出色的女性。

在本课中，您可以了解电路的基本组成部分。