What does the author imply about Boston？ 查看材料
A. It has pleasant weather all year round．
B. It produces wealth as well as high-tech．
C. It is not likely to attract lots of investors and nerds．
D. It is an old city with many sites of historical interest．
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查看材料
A. Redecorating her office．
B. Majoring in interior design．
C. Seeking professional advice．
D. Adding some office furniture．
下列不属于承包人为分包工程施工需提供协助条件的是（）。
A. 施工图纸
B. 施工场地
C. 施工进度计划
D. 分包人使用的 临时设施和施工机械
对各种可行性方案进行评估时应重点评估各方案的优点。()
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