【简答题】植物传染性病害的流行必须具备3个基本条件: 病原物、( ) 和 环境条件
【单选题】If a bond is capitalized over a period greater than one year (one period), it involves the calculation of compound interest.
【单选题】( )4.It takes the earth one year one orbit around the sun.
【单选题】The fridge is _____for one year. It means that the company that makes it promises to repair or replace it if it breaks within a year.
【单选题】How long will it take experts to agree how to measure obesity?