【单选题】— Look! There ________! — Oh;yes,there __________ ! [ ]
【单选题】Tom likes fish very much. He often buys some fish in the shop and takes it home. But when his wife sees the fish, she says to herself, “Good! I can ask my friends to have lunch, and we can eat the fis...
D.
Tom’s wife and her friends
【单选题】广义笛卡尔积属于关系运算符中的(40)。两个元数分别为n目和m目的广义笛卡尔积是一个(41)列的元组集合,其形式定义如下:(42)=(43)。
【单选题】(A069f)下列运算符中,属于一元运算符的是( )。
【简答题】阅读理解,根据短文内容,判断下列句子正(T)误(F)。 Every Saturday Tom goes to the park and plays s with his friends. And he comes home at twelve thirty for his luch. But today a car stops at his house at twelve o'clock....
【简答题】阅读理解 Tom is a seaman. He is always drunk(喝醉). One day Tom goes to a new city. He drinks very much in a bar that night. When he goes out of the bar,he sees a man lying in the street. The man is quite d...