【单选题】As we all know, _________ exercise will help to strengthen the heart and improve circulation of the blood.
【单选题】某一个操作系统对内存的管理采用页式存储管理方法,所划分的页面大小是
【单选题】某个操作系统对内存的管理采用页式存储管理方法,所划分的页面大小()。
【单选题】The company's training plan was designed to help the employees to improve their work habits and ______.
【简答题】已知点A(2,a)和点B(b,-1)关于原点对称,则a=______;b=______.
【简答题】已知点A(2a+3b,-2)和点A′(-1,3a+b). (1)若点A和A′关于y轴对称,则a+b=______; (2)若点A和A′关于x轴对称,则a+b=______.
【单选题】His advice couldn’t help ____ her health, so she couldn’t help ____.
【简答题】His efforts to improve the sales of this product have been very (help) ______.
【简答题】A project ________ great significance is to be discussed, which will help to improve the local people's living conditions.
【简答题】Genetically modified crops can help to improve nutrient contents and farmingproductivity.