题干

化学与环境、材料和科技等密切相关。下列说法中错误的是 (    )

A:向煤中加入适量CaO可大大减少燃烧产物中SO2的量

B:光导纤维在信息产业中有广泛应用,制造光导纤维的主要材料是单质硅

C:即将到来的新能源时代,核能、太阳能和氢能等很可能成为主要能源

D:“嫦娥二号”于2010年10月1日成功“奔月”,在制造过程中使用了大量的复合材料

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B

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Best Travel Guides by Continent

     We've broken down(分类)the best travel guides, by continent, to help you find student discounts and travel like a local on your next adventure.

Europe—Let's Go Europe 2017: The Student Travel Guide

     Let's Go was founded about 55 years ago when a Harvard student had an idea to provide accessible, budget travel lips for young people. Students lave its amusing pages. Let's Go Europe 2017 has everything you need for your trip—from the best beer in Brussels to how to avoid the lines at the Louvre.

Africa—The Rough Guide to Cape Toxin, the Winelands, and the Garden Route

     With its colorful photos and detailed tips on how to make the most of South Africa, The Rough Guide is the book to gel when visiting Africa. You may not have access to Google Maps when you1 re out exploring but that's OK. The Rough Guide also comes with easy use to maps.

     It can be purchased as an eBook, or as a paperback(平装本).

Asia—Lonely Planet: South-East Asia on a Shoestring

     This guide is perfect for those backpacking through the hidden treasures of South-Ea.sl Asia. With detailed recommendations from experts in the area, this guide helps first-timers as well as experienced backpackers. This book can lie purchased as a paperback travel guide. A download for an eBook or separate chapters can be purchased to serve as a guide to specific cities.

North America—Planet USA Travel Guide

     With detailed reviews of the best places to eat, sleep, and explore, Lonely Planet is linked with budget-friendly attractions and that's why it makes our best travel guides list. This travel guide is available in paperback.