【简答题】为了达到精炼钢液的目的,LF炉所造合成渣必须具有较高的碱度、( )低熔点和良好的流动性,此外还要具有合适的密度、( )、表面张力和导电性等。
【单选题】听力原文: St. Valentine's Day has roots in several different legends that have found their way to us through the ages. One of the earliest popular symbols of the day is Cupid, the Roman god of love, who i...
【单选题】Pressed from his parents, and ________ that he has wasted too much time, the boy is determined to stop playing video games. [ ]
【简答题】阅读理解。 In the small town of St. Petersburg during the mid to late 1800's, lived a boy named Tom Sawyer. He is a clever and naughty boy who doesn't have many friends. Will Tom make good choices and find...
【简答题】根据短文内容,判断正(T)误(F)。 Xiao Ming is a middle school student. He is a good boy, and he studies very hard. But his family is very poor, because his mother got ill a few years ago, and his father has no job....
【判断题】《旅行社条例》使用于中华人民共和国境内的旅行社经营活动。( )