单选题For each group of items in the following,point out which item does not fall under the same category as the rest and explain the reason in ONE sentence.(24/150)

单选题______the temperature falling so rapidly, we could not go on with the experiment.

单选题They couldn" t______him of his mistakes.

单选题There are two types of avalanches, loose snow and slab avalanches. Loose snow avalanches begin from a single point and expand when descending. The slide path looks much like an upside down V. Loose snow avalanches are usually fairly minor, but in exposed climbing situations or in late spring they can be very serious. Slab avalanches are the greatest threat to skiers, climbers and snow-mobilers. A slab is a cohesive layer of snow that has not bonded well with the layer below it. As a result, it is under stress, supporting its own weight on a slope. When the stress within the snow layer exceeds the strength of the snow, the slab releases much like a pane of glass when it shatters under its own weight. The trigger may be another storm, a change in temperature, or the weight of a person. Avalanches are one of the greatest hazards facing winter travelers in the mountain. Every year too many people are killed, usually triggering the avalanche that buries them. About half of all buried victims will die if they are not rescued within 30 minutes. Many are killed during or within minutes of the avalanche from suffocation, the severe trauma of hitting boulders or trees during the slide, or having been crushed by massive blocks of snow. The victims' only hope for survival is a fast and organized rescue from the rest of the party. Learning to avoid avalanche terrain is essential to safe winter travel in the mountains.

单选题Negative transfer in learning a second language is known as______.

单选题Ten years ago, a house with a decent bathroom was a ______ symbol among university professors.

单选题She felt sad for a while, but fortunately, the feeling was______.

单选题Reference is one of the rarely used cohesive devices.（南开大学2005研)

单选题A survey of retired people has______that most of them are independent and enjoy life.

单选题China and the United States established their diplomatic relationships in January______.

单选题The smallest meaningful unit of language is allomorph.

单选题Which one of the following works deals with the war experience in American Civil War?

单选题______the world, they were a happily married couple.

单选题In the author's opinion, the absorption of immigrants into American society is ______.

单选题People who do not sleep enough tend to become______.

单选题Donovan's story is mentioned in the text to ______.

单选题"When all at once I saw a crowd, A host of golden daffodils. "In the above quotation taken from William Wordsworth" s poem " I Wandered Lonely as a Cloud" , the word "host" refers to______.

单选题In Halliday"s view, ______processes are those in which something is done.

单选题While Chinese observers recommend sticking to the principle of a peaceful resolution, they warn that if Japan takes further provocative acts, the bilateral relationship could spin out of control.

单选题From Section B