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【判断题】
平均消费倾向递减是因为边际消费倾向递减。A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】请结合实例论述同题组合稿件确定主题的思路。
【单选题】We learn from the Pew Research Center that one third of American adult children______.
A.
have parents with no savings and pensions
B.
ignore the emotional needs of their parents
C.
can't afford the daily and medical expenses
D.
spend their own money on their parents' care
【单选题】No decision _ about any future plan until we have done some research into the student preference．
A.
has been made
B.
is made
C.
is being made
D.
will be made
【单选题】When somewhat better ________ academically, he returned home to continue his research.
A.
equipped
B.
had equipped
C.
provided
D.
providing
【单选题】_____to his research work, the professor cared little about any other things．
A.
Devoting
B.
Devoted
C.
Having devoted
D.
To devote
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