答案　D解析　文章出处题。本文主要讲述的是1988年失控的森林大火给黄石国家公园带来的损害因此本文与地理风情有关。故选D项。

　　All

　　across

　　California,

　　honeybees are flying away from their hives (蜂箱) and dying.

　　Empty hives are causing a lot of worry about some important food crops.(授粉昆虫)—they enable plants to produce the fruits and nuts we enjoy by carrying pollen from one plant or flower to the next. The wind pollinates oats, (like apple and cherry trees and melon vines) depend on insects, bats, and birds. In the U. S．， millions and millions of bees kept by human beekeepers fly around doing a lot of this important work for food crops.“Bees are worth protecting because their work adds

　　so much to our diet，” says Dr.

　　Jeff Pettis of the Bee Research Laboratory.

　　California's almond crop alone depends on about half the bees in the country. But now the almond crop and many others could be in trouble with so many bees dying.

　　Researchers at government and university labs all over the country are trying to figure out why so many bees are dying. However, bees are hard to study. Most die away from the hive, so researchers don't have dead bodies to examine. And when researchers return to a hive after two weeks, about half the bees they studied on their first visit will be dead, replaced by new ones in the natural life cycle of bees. “It isn't like studying a large animal like a cow that doesn't move around much and is easy to find out in the cow field，” says Pettis.

【2016届高三英语一轮复习课时训练：8 Adventure(北师大版)】相关文章：

★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (33)

★ 山东省济宁市2016年高考英语复习：高中英语语法大全TXT版

★ （全国通用）2014届高考英语一轮单元复习 限时强化训练十二

★ 2017届高考英语二轮复习课时训练：1（含解析）

★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (53)

★ 2017高考四川省广安市英语阅读理解一轮系列训练：11（含解析）

★ 2014届高考英语一轮复习必修5参考答案（外研版）

★ 2014届高考英语一轮复习课时作业(四十三)选修8Module 1《Deep South》（外研版）

★ 2017届高考英语二轮复习大题冲关秘籍短文改错：名校模拟（含解析）

★ （全国通用）2014届高考英语一轮单元复习 限时强化训练一