Read the expressions. Then listen to the talk again and decide whether the expressions are used by the speakers.[音频]
A. 1.Anyway, …
B. 2.And then …
C. 3.First of all …
D. 4.Before long, …
E. 5.I don't believe it.
F. 6.All of a sudden, …
G. 7.This happened when …
H. 8.The next thing I knew, …
I. 9.Oh! You're kidding!
J. 10.In the end, …
K. 11.Oh! How embarrassing!
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Read the statements.Then listen to the talk again and decide whether eachstatement is true or false.[音频]
A. The woman took some medicine before going out.
B. The woman took a bus for her important interview.
C. The woman had a dream about her mother.
D. The woman was late for her interview.
E. The woman had taken the out-of-date pills.
Put the following sentences in the right order.
下列关于关系性质的说法，错误的是____。
A. 行与列交叉点不允许有多个值
B. 表中的一行称为一个元组
C. 表中任意两行可能相同
D. 表中的一列称为一个属性
关于计算思维的基本特征，说法错误的是____。
A. 不是人的，而是计算机的思维方式
B. 数学和工程思维的互补与融合
C. 概念化，不是程序化
D. 根本的，不是刻板的技能
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