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【简答题】
已知：a n =2 n-1 则10a 1 +9a 2 +8a 3 +…+3a 8 +2a 9 +a 10 =______．
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反馈参考答案：
举一反三
【简答题】5 Complete the text. The
house was in a terrible condition. The rain had come into all the bedrooms
because the roof was ► leaking , and there were (1) s____ on the walls
and carpets. A builder (2...
【单选题】Although the condition in which she lives indicates that she is miserly, her dedication to the charities shows that she is ______.
A.
stingy
B.
frugal
C.
thrifty
D.
generous
【多选题】20 世纪 70 年代中期起大众旅游遵循的集中生产线原则主要体现为
A.
度假被标准化，而且没有弹性
B.
别无二致的度假产品被成批生产出来
C.
规模经济成了生产的第一推动力
D.
度假产品以一种雷同性的、日常的方式批量消费掉
【判断题】Shipped in apparent good order and condition means that the vessel looks very good．
A.
正确
B.
错误
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