任务型阅读

    A white elephant gift exchange is a popular holiday party game in, the United States. Generally, the party needs at least six participants, and' the larger the group: is, the more entertaining the game will be____But it can result in heated competitions between players trying to get the gifts.

    ____Sometimes, the rule is that the item must be previously owned, which means that you can exchange an unwanted item or trinket(小装饰品) with your friends. But sometimes you can buy a new but inexpensive item just for the party.

    Every participant is expected to bring one wrapped(包装好的) gift. A white elephant gift is usually something useless or inconvenient____ Guests are asked to wrap them nicely and leave no identifying markings on the presents.

    To start the game, a participant must act as the first player to choose a gift; this can be decided randomly or by picking numbers out of a hat____As for the next player? This person can either “steal” the first person's gift or choose an unwrapped item from the pile. Each gift can be stolen only three times before it is considered "dead".

    ____Any person that has to give up a gift can also pick a new gift or steal one from another person. Each turn is only allowed three swaps between the current player and the previous players. The game won't finish until all the presents are opened.

A. It all depends on how the game is organized.

B. This process is repeated until the game is over.

C. Don't forget that the game's purpose is to have fun.

D. The first player then opens the gift in front of everyone.

E. White elephant gift exchange can be run in different ways.

F. The goal of the party is usually entertainment rather than gain.

G. Trinkets, unidentifiable kitchen items and toys are typical “white elephants” .

细胞学说揭示了细胞的统一性和生物体结构的统一性，它是自然科学史上的一座丰碑．

请回答下面的问题．

      People have used pigeons to carry messages to one another for hundreds of years. In the 12th century, the royal palaces of Iraq and Syria included pigeon houses so the kings could be kept informed of their generals' victories and defeats on the battlefield. In fact, pigeons were a common way to send messages right up through World War II.
      Many countries, such as the United States, England, France, Germany, and Italy, in both World War I and World War II, used carrier pigeons. Not only were the birds often the fastest, most reliable way to send messages, they could also be used to reach soldiers far behind enemy lines, where radios and field telephone lines were useless. Since they could easily be released (释放) from airplanes or ships, every branch of the armed services used the birds. In World War II, more than 3,000 soldiers and 150 officers were needed to care for and train the tens of thousands of birds in the U.S. Pigeon Service.
      Carrying messages could be a dangerous job. Some pigeons performed with such bravery that they became famous and were even awarded medals, such as England’s Dicken Medal of Gallantry. In a few cases, pigeons even became prisoners of war. In 1918 American forces captured a pigeon named Kaiser, which had been trained to fly special missions for Germany during battle. He was taken to America, where he lived to the age of 32. The most famous pigeon of all may have been Cher Ami. Stationed in France during World War I, he carried twelve important messages for American forces. On his last mission, though wounded, he carried a message that saved the lives of 194 American soldiers. For his extraordinary service, he was awarded the French “Croix de Guerre.”
Carrier pigeons are a slightly different breed (品种) from the kind of pigeons you see on city streets. They are much thinner and taller, with longer legs. Many people find carrier pigeons ugly because of their big wattle, a bent buildup of skin on the beak（鸟嘴）; however, people who raise pigeons often enjoy this strange appearance and consider carriers the best of their breed.
        Today, modern communication methods can carry information from one place to another hundreds of times faster than a pigeon could do. However, few people would argue with the fact that carrier pigeons—especially those that served in the military—have earned their place in history. Stories about brave pigeons such as Cher Ami, President Wilson, and Colonel’s Lady have the power to inspire us as no fax machine or high-speed Internet connection could ever do.

在干旱、半干旱地区，不合理的灌溉会导致农田（  ）

“ ________ to Michelle and having two beautiful girls in my house never allows me to look down upon women,” said Obama.