当下，人民群众最关心的经济指标 , 除了 GDP 就是CPI了 (CPI 指消费者物价指数〉。物价的每一次波动 , 都牵动着消费者敏感的神经。下列选项能够体现价格影响消费需求的是

①冬天西瓜的售价比夏天高一倍以上 ②石油价格的下跌拉动了汽车消费

③金融危机导致我国旅游市场萎缩   ④猪肉价格上涨带来了牛肉消费增加

A．①②

B．①③

C．③④

D．②④

WebSQL is a SQL-like (6) language for extracting information from the web. Its capabilities for performing navigation of web (7) makes it a useful tool for automating several web-related tasks that require the systematic processing of either all the links in a (8) , all the pages that can be reached from a given URL through (9) that match a pattern, or a combination of both. WebSQL also provides transparent access to index servers that can be queried via the Common (10) Interface.

A．hypertext

B．page

C．protocol

D．operation