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【单选题】
下面关于惠更斯原理与惠更斯-菲涅尔原理说法错误的是( )A.
惠更斯原理和惠更斯-菲涅尔原理都提出了“次（子）波假设”。
B.
惠更斯原理和惠更斯-菲涅尔原理都提出了“次（子）波相干叠加”的理念。
C.
惠更斯原理可以解释光的直线传播、反射、折射和晶体的双折射等；但是不能解释波的干涉和衍射现象，原因在于未涉及波长、相位等的概念。
D.
惠更斯-菲涅尔原理相比较原本的惠更斯原理的改进在于，给出了振幅、相位的定量表达式，通过引入倾斜因子并规定角度的范围解决了惠更斯原理解释存在倒退波的问题。
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【单选题】He's inherited his father's _______temper.
A.
prosperous
B.
confident
C.
simple
D.
explosive
【单选题】He didn’t selfishly keep for himself the money inherited from his uncle.Instead，he made a________contribution to help the community. (2013·湖北，28)
A.
commercial
B.
generous
C.
comparable
D.
profitable
【简答题】My friend Alice visited my city last week . She arrived in Hong Kong on Wednesday morning .She is from Australia. I showed her around the city. We visited the Clock Tower first. The Clock Tower was ve...
【单选题】---What is Julie like? ---________________.
A.
She likes bananas
B.
She is 23
C.
She is a nurse
D.
She is friendly and helpful
【单选题】Where does Lily come from?
A.
She comes from England.
B.
She comes from America.
C.
She comes from Canada (加拿大).
【简答题】A．She ordered some paper. B．She had the printer repaired. C．She chatted online with a friend. D．She filled in an application form.
【多选题】下列关于应用软件的说法中，正确的有（ ）。
A.
用于管理和维护计算机资源
B.
是为解决各类实际问题而设计的软件
C.
是计算机系统必备的软件
D.
会计软件和Excel都属于应用软件
【多选题】下列关于应用软件的说法中，正确的有（ ）。
A.
用于管理和维护计算机资源
B.
是为解决各类应用问题而设计的各种计算机软件
C.
是计算机系统必备的软件
D.
Word和Excel都属于应用软件
【简答题】阅读短文，回答下列问题。 John Brown, an office worker, lives in Washington. He inherited his father's $1,000,000 when he was 23. He didn't feel happy at all. His college friends were looking for their first jobs,...
【单选题】He didn’t selfishly keep for himself the money inherited from his uncle. Instead, he made a ______ contribution to help the community.
A.
commercial
B.
generous
C.
comparable
D.
profitable
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