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【简答题】
分析以下代码，判断下面说法正确的是（ ）。 class Animal { final function shout(){ echo 'parent'; } } class Dog extends Animal { public function shout(){ echo 'son'; } } $dog=new Dog(); $dog->shout(); A. 代码运行结果会在浏览器输出"son"字样 B. 代码运行将出错，因为父类的shout方法别定义为了final方法，该方法不能被子类重写 C. 代码运行结果会在浏览器输出"parent"字样 D. 以上说法都不正确
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【简答题】study;stomp;strike;stop;spoon;stocky;spot;spring;stay;spur;spill;do you like it; street;set it up;look at it; look it up;star;skirt;sky;spy;skate;ski;stir;strength;skin;score;school;start [t]浊化[d]: ...
【单选题】听力原文： Let's perceive to the main exhibit hall and look at some of the actual vehicles that played a prominent role in speeding up mail delivery in the past. Consider how long it used to take to send a...
A.
Overland transportation in the nineteenth century
B.
Historical aspects of mail delivery
C.
Vehicles currently in use by the postal service
D.
The invention of the railroad
【简答题】欢迎词的标题一般由( )、( )、( )三部分组成。
【单选题】July 20, 1978, when the spacecraft Viking landed on Mars, that people had their first close-up look at that planet ’ s surface feature.
A.
I t was not until
B.
Not until it was
C.
Until it was not
D.
Not until
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