1 . ____________ (学术的) VR enables students to interact with others in a three-D environment.（根据汉语提示单词拼写）

2 . Chinese tech giant Huawei launched its new operating system called Harmony, creating an ______ app ecosystem to Google's Android

A．alternative

B．aggressive

C．academic

D．abstract

3 . You needn’t be too concerned about what to wear to the party — it’s all _______ anyway, because you haven’t even been invited yet.

A．academic

B．painful

C．physical

D．economical