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【单选题】
25 设有定义:int a=15; 则执行语句:a/=a+a; 后a 的值是________。A.
0
B.
1
C.
0.5
D.
16
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举一反三
【单选题】What was the woman worried about?
A.
She would not survive the disease.
B.
She would not be able to pay for the medical bill.
C.
She would not be able to pay back Dr. Kelly's kindness.
D.
She would not spread her love to other people.
【单选题】在维持效用水平不变的前提下,消费者增加一单位某种商品的消费量时所需要放弃另一种商品的消费数量。这被称为( )
A.
商品的总效用
B.
B .商品的边际效用
C.
商品的边际技术替代率
D.
商品的边际 替代率
【单选题】You needn't ___________ your English. I will help you. [ ]
A.
worry
B.
worried
C.
worry about
D.
worried about
【简答题】Reading comprehension. Students often meet with questions as follows: bullied by someone, worried about a weak subject, puzzled by family problems or concerned about pets at home. All the questions ab...
【简答题】What was Jim worried about? Jim was worried about his ______ in the park.
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