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【单选题】
一般来说，恩格尔系数在40％～50％之间被认为是（ ）A.
勉强度日
B.
小康水平
C.
富裕
D.
最富裕
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反馈参考答案：
举一反三
【简答题】假设有以下变量的定义: int x=5; float y=6.5; 计算下面各表达式的值。 ( 1 ) x+3 , y-2 ; ( 2 )( int ) y/x ; ( 3 ) x/3*y ;
【单选题】下列关于蛋白质结构的叙述，不正确的是
A.
三级结构属于空间构象
B.
各种蛋白质均有一、二、三、四级结构
C.
α-螺旋属二级结构形式
D.
无规卷曲是在一级结构基础上形成的
【单选题】Why does the professor mention the Moon’s mantle?
A.
To explain why scientists believe that meteor impacts cannot affect the Moon’s mantle
B.
To explain what kind of information scientists hope to obtain from the mantle
C.
To point out that the Moon’s crust and mantle are made of similar materials
D.
To point out that the Moon’s mantle and Earth’s mantle have different compositions
【单选题】Why does the author use the Chinese mother's shopping experience as an example?
A.
To warn shop assistants of tough customers.
B.
To teach people how to get better service as customers.
C.
To criticize some improper shopping behavior.
D.
To show how different people's expectations of service are.
【单选题】Why does the professor discuss the instruments of the orchestra for Monteverdi's opera Orfeo?
A.
To compare the Baroque orchestra with the orchestra of today
B.
To give examples of instruments that Monteverdi invented
C.
To illustrate how different instruments helped to tell a story
D.
To explain why the orchestra was the center of Baroque music
【简答题】简述女性内生殖器官都有哪些。
【单选题】设有一联合体变量定义如下: union data {long w;float x;int y;char z;}; union data beta; 执行下面赋值语句后,正确的联合体变量beta的值是。 beta.w=123321;beta.y=88;beta.x=99.9;beta.z='A';
A.
123321
B.
88
C.
99.9
D.
'A'
【单选题】下列属于增值税兼营非应税劳务的是( )
A.
商场销售家具并实行有偿送货上门
B.
建材商店既销售建材，同时也提供装修劳务
C.
饭店提供餐饮服务并销售酒水
D.
电信部门销售手机并为客户有偿提供电信服务
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