The W.H.O.announced ten projects to test non-chemical methods for fighting mosquitoes.

VOA: special.2009.05.26

There will be a test on Tuesday ; based on homework one; ten minutes at the beginning of the recitation.

在周二，将会有一个测验,基于你们的第一份作业;,在背诵课的前10分钟。

麻省理工公开课 - 固态化学导论课程节选

There will be a test on Tuesday ; based on homework one; ten minutes at the beginning of the recitation.

在周二，将会有一个测验,基于你们的第一份作业;,在背诵课的前10分钟。

麻省理工公开课 - 固态化学导论课程节选