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【单选题】
关于函数的参数,以下选项中描述错误的是A.
可选参数可以定义在非可选参数的前面
B.
一个可以传递给带有星号的可变参数
C.
在定义函数时，可以通过在参数前增加星号 ( *) 实现可变数量参数
D.
在定义函数时，可以直接为参数指定默认值
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举一反三
【简答题】22 分 ) 阅读材料,回答下列问题。 材料一 勤俭节约是中华民族的传统美德。 “ 一粥一饭,当思来之不易;半丝半缕,恒念物力维艰。 ”“ 历览前贤国与家,成由勤俭败由奢。 ” 然而,当今社会 “ 舌尖上的浪费 ” 令人触目惊心。我国每年在餐桌上浪费的粮食价值高达 2 000 亿元,相当于 2 亿多人一年的口粮。 材料二 大场面、大投入、大制作,讲排场、比阔气、竞奢华 ...... 近年来,对于一...
【单选题】Chairman Xi Jingping had ____friendly talk with U.S President Obama in ____ America.
A.
a; /
B.
the; /
C.
/; the
D.
a; an
【单选题】听力原文： Once again in Richfield Heights today, there were no classes in the public elementary and secondary schools. This marks the eleventh day that the schools in that community have remained closed. ...
A.
Vacations.
B.
Wages.
C.
Overcrowded classrooms.
D.
Paid sick leaves.
【简答题】化合物中酸性最弱的是 查看材料
【单选题】President Bush has proposed adding optional personal accounts as one of the central elements of a major Social Security reform. proposal. Although many details remain to be worked out, the proposal wo...
A.
People can transfer some money from their investment accounts to the Social Security taxes
B.
The return people earn from their accounts can decide their social benefit decisively
C.
People can spent more on investment and meanwhile receive more benefit in the future
D.
These accounts will determine how much people can receive in their lives
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