According to the passage, if you buy a pair of $50 shoes in the New York City, you pay extra ______as sales tax.
A. $4.5
B. $4
C. $5
D. $5.50
查看答案
What does the author imply in the last paragraph？
A. Package is just an advertisement.
Buyers shouldn't believe the information on the package too much.
C. The package has nothing to do at all with the product.
D. Buyers can always find answers in the information on the package.
施工时，为了保证按配合比投料，要对混凝土试验室配合比进行修正，主要是修正()。
A. 水泥用量
B. 砂石含水率
C. 施工配合比
D. 混凝土强度
带土壤的植物繁殖材料在进境前20—45日办理备案。()
A. 正确
B. 错误
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