【简答题】We use passwords(密码)to keep our personal information secret and safe, but some passwords we use may not be as reliable as we think. Splash Data, a computer security company, recently released a list o...
【单选题】听力原文:M: In our science classes we use kilos, but we use pounds and ounces in everyday life. W: Your country also uses inches, feet and yards, doesn't it? Q: What are they discussing? (13)
【简答题】Complete the sentences with have to, must, don't have to or mustn't . We use when the speaker thinks it is necessary. We use when the situation makes something necessary. We use to say that doing some...