试述三大能源物质的生理功能。

You are assigned as the project manager in the middle of the project. The project is within the baselines, but the customer is not happy with the performance of the project. What is the FIRST thing you should do （）

A. Discuss it with the project team. 

B. Recalculate baselines. 

C. Renegotiate the contract. 

D. Meet with the customer.

I would like to ( ) a flight to Paris on January 8 on Air France, First Class and round trip.

A．have book

B．book

C．want

D．have wanted

1938年3月27日，（）在武汉成立，是全国规模的文艺界抗日民族统一战线组织。

在程序设计中，计算机辅助设计又叫（），已逐渐代替人工设计，极大地提高了设计的质量和效率。