【单选题】Some cities grow very large because of two important reasons. First, there may be important natural resources like wood, gas, oil, rivers or harbors near or in the city. Natural resources like wood or...
【简答题】Fruit Imagine a world without fruit. We wouldn’t be very healthy. We get a lot of important vitamins from eating fruit. We think of fruit primarily as something to eat._____(26)Fruit is part of a flow...