【单选题】It’s necessary to have some____ knowledge for this job.
【单选题】While sometimes it’s necessary to have phone calls in public, loud phone conversations are not so .
【判断题】勒让德方程是一个二阶线性齐次常微分方程。
【简答题】深深地根植于 ,是社会主义核心价值观历史底蕴的集中体现
【简答题】A. 深深地根植于 ( ),是社会主义核心价值观历史底蕴的集中体现。 B. 中华优秀传统文化 C. 人类社会一切文明成果 D. 中华文化
【单选题】It’s necessary for you _____ exercise every day.
【单选题】It’s necessary to have breakfast everyday.
【简答题】It’s necessary for her to change her dress after a busy day. She needed __ her dress after a busy day.