【单选题】Read the essay below, then put the ideas into two groups: advantages and disadvantages. 1. sometimes people think they are talking online to someone friendly, but it might be a dangerous stranger. 2. ...
【简答题】The economy of Elmendyn contains 2,000 $1 bills. a. If people hold all money as currency, what is the quantity of money? b. If people hold all money as demand deposits and banks maintain 100 percent r...
【简答题】单词拼写。 1. Many people were _____ (埋葬) underground when the earthquake happened. 2. If you keep on _____ (忽视) your diet, trouble will follow. 3. Volcanoes, hurricanes, typhoons and earthquakes are natur...