【单选题】"extraordinary, extra-official, extracurricular,extra-professional, extra-solar" and some other words contain the same affix “extra”which means ____________.
【简答题】When the Titanic was built, people assumed it would never sink So, when it sank on its first journey, the news(1)________(surprise) everyone greatly.The Titanic was built in Belfast, Ireland. Its make...