【简答题】阅读理解 There are several advantages in planting trees: they firm the soil, soak(渗透) up extra water and take carbon dioxide out of the atmosphere. However, it now turns out that planting trees could add ...
【简答题】阅读理解。 This is a street crossing. There are red and green lights at each corner. Drivers must watch the lights carefully. When there is a green light, the cars may go. When there is a red light, the ca...
【简答题】阅读理解 There are several advantages in planting trees: they firm the soil, soak up(吸收) extra water and take carbon dioxide out of the atmosphere. However, it now turns out that planting trees could add...