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【单选题】
We are at a critical point in our nation’s history and we cannot go back as individuals or as aA.
country towhat we were ten，five or even one year earlier.
B.
C.
D
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【简答题】詹妮弗和德鲁都消费橙汁和咖啡。詹妮弗以橙汁换咖啡的边际替代率为1，德鲁以橙汁换咖啡的边际替代率为3。如果橙汁的价格为2美元，而咖啡的价格为3美元，那么哪一个市场存在超额需求?你认为这两种商品的价格会有什么变化?
【单选题】Amy thinks hamburgers are not healthy, so she _________ eats them.
A.
seldom
B.
always
C.
usually
D.
often
【简答题】What does Petro say about the women students at Cambridge?
【判断题】Food, such as, pizza and hamburgers are not really junk food; they contain a lot of protein and vitamins.
A.
正确
B.
错误
【单选题】Hamburgers are not ________, we do not eat ________.
A.
health; they
B.
healthy; they
C.
healthy; them
D.
health; them
【单选题】劳动者不能胜任工作，经过培训或者调整工作岗位仍不能胜任工作，由用人单位解除劳动合同的，用人单位应按其在本单位工作的年限，工作时间年满1年发给相当于1个月工资的经济补偿金，最多不超过( )个月。
A.
3
B.
6
C.
9
D.
12
【单选题】Hamburgers are very delicious, ________ they are not healthy.
A.
but
B.
because
C.
or
D.
so
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