【简答题】阅读一下段落完成以下题目。 Three of our classmates will have their birthdays this month. To celebrate with them, we plan to buy some gifts for each of them. Jane likes music, so we are going to buy her a CD. Terry...
【判断题】外键是指一个表中含有与另外一个表的主键相同的列或列组,外键不要求唯一。
【单选题】According to the passage, which of the following is true?
A.
It is very difficult for the middle-aged to live in America.
B.
America is Kids' Country because the majority of its people are young and vigorous.
C.
Kids' Country was taking shape in America when immigrants poured into the country.
D.
America is more of Kids' Country than any other countries in the world.
【单选题】__________ enjoys going to the gym early each morning.
【单选题】Which of the following statements is NOT true?
A.
Getting off to work with a minimum effort helps save one' s energy.
B.
Dr. Kletman explains why people reach their peaks at different hours of day.
C.
Habit helps a person adapt to his own energy cycle.
D.
Children have energy cycles, too.
【判断题】指令寄存器用来寄存当前要执行的指令地址。
【判断题】外键是指一个表中含有与另外一个表的主键相同的列或列组,外键不要求惟一
【单选题】Which of the following best describes the relation-ship between the McLaurin decision and the 1954 Brown v. Board of Education decision?
A.
The McLaurin decision superseded the Brown decision.
B.
The Brown decision provided a precedent for the McLaurin decision.
C.
The Brown decision reversed the McLaurin decision.
D.
The McLaurin decision limited the application of the Brown decision.
E.
The McLaurin decision provided legal authority for the Brown decision.
【判断题】外键是指一个表中含有与另外一个表的主键相同的列或列组,外键不要求惟一。