To assign a double variable d to a float variable x, you write

All of the following is a way to work with multiple Web pages, except to _____.

A. open more than one instance of the browser B. split the main browser's window C. open a new page D. open a new tab

_______ sites let users evaluate hotels, movies, games, books, and other products and services.

A) Social bookmarking B) Really Simple Syndication C) Captcha D) Social review