【单选题】______ have gone abroad.
【简答题】阅读理解。 The Blacks and the Whites are good neighbors. They know each other well. Sometimes they have dinner together. Yesterday,Mrs Black invited the Whites to have dinner again because it was her birth...
【简答题】火灾发生时,在火场温度作用下,——的感温元件温度升到预定的动作温度范围时,喷头开启,喷水灭火。
【简答题】有一分数序列:2/1,3/2,5/3,8/5,13/8,21/13...求出这个数列的前20项之和。 程序分析:请抓住分子与分母的变化规律。分数:fraction 1、第一项是2/1 2、前面一项分子和分母相加的和,为下一项的分子 *3、前面一项分子,为下一项的分母
【单选题】The Whites were rich and happy.
【单选题】There are both whites and non-whites in Cuba.
【单选题】__ have gone abroad.
【单选题】The author is most critical of the Whites' ______.
【单选题】Atlanta ____ a series of fierce fights between blacks and whites in the 1960s. [ ]
【单选题】In protest, blacks and______whites sat at the counters of these restaurants and refused to move until they were served.