单选题 You ______ go home now. It's getting late.

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单选题 -- Where did Mary' s parents buy the beautiful vase? --It was in the same village ______ they spent their holidays last year.

单选题 The two parties haven't reached any agreement, but decided to set another date for ______ talks.

单选题 Something is wrong with your truck. You'd better have it ______.

单选题 Climate, more than any other single factor, determines the distribution of life on earth. Climatic boundaries establish the limits which organisms can survive. Plants, even more than animals, must be well adapted to climate in order to survive. They cannot move about or take shelter but must be equipped to endure whatever weather conditions are likely to occur. In the harsh conditions of the tundra, for example, low growing mosses, lichens, and a few flowering plants all hug the ground for shelter from icy winds. Animals, despite their ability to move about and find shelter, are just as much influenced by climate as plants are. Creatures such as the camel and the penguin are so highly specialized that they have an extremely limited distribution. Others, such as bears are flexible enough to adapt to a broad range of climates. Oceandwelling organisms are just as sensitive to climatic changes—in this case temperature and salinity—as land animals. Reef corals can survive only in clear warm seawater. Certain foraminifers are so sensitive to changes in their environment that their presence can be taken as an index of sea temperature. Human beings are among the least specialized of all animals and can live almost anywhere. Their clothes and their homes act as a sort of 'miniature climate' that can be taken with them everywhere.

单选题 I used to smoke ______, but I gave it up three years ago.

单选题 The child was ______ for getting his shoes and socks wet.

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单选题 I always have a difficult time choosing original birthday presents. My imagination never seems to get beyond ties, handkerchiefs, or pairs of socks. But, strangely enough, it did not take me long to decide on Tom’s birthday present. For the first time in my life I had a good idea—I would buy him a bottle of champagne. Before the party began, Tom suggested that I should open the bottle. I put it between my knees and began to pull, but it remained firmly corked. Soon a crowd gathered round to watch the fight between me and the bottle. I could hear all sorts of' helpful' suggestions from the guests like 'Break the top off', 'Use your teeth!' etc. But I was losing the bottle. We were struggling on the floor together, when all of a sudden there was a loud 'pop!' and the cork shot up into the air, while the angry bottle showered everybody with champagne!

单选题 The cowboy is the hero of many movies. He is, even today, a symbol of courage and adventure. But what was the life of the cowboy really like? The cowboy's job is clear from the word 'cowboy'。Cowboys were men who took care of cows and other cattle. The cattle were in the West and in Texas. People in the cities of the East wanted beef from these cattle. Trains could take the cattle east. But first the cattle had to get to the trains. Part of the cowboy's job was to take the cattle hundreds of miles to the railroad towns. The trips were called cattle drives. A cattle drive usually took several months. Cowboys rode for sixteen hours a day. Because they rode so much, each cowboy brought along about eight horses. A cowboy changed horses several times each day. The cowboys had to make sure that the cattle arrived safely. Before starting on a drive, the cowboys branded the cattle. They burned a make on the cattle to show who they belonged to. But these marks didn't stop rustlers, or cattle thieves. Cowboys had to protect the cattle from rustlers. Rustlers made the dangerous trip even more dangerous. Even though their work was very difficult and dangerous, cowboys did not earn much money. They were paid bally. Yet cowboys liked their way of life. They lived in a wild and open country. They lived a life of adventure and freedom.

单选题 The tailor made him a new ______.

单选题 It is requested that all the students ______ present at the meeting tomorrow.

单选题 I am used ______ my sleep interrupted.

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单选题Have you ever argued with your loved ones over simple misunderstandings（误解）?Little wonder.We often believe we′re more skillful in getting our point across than we actually are,according to Boza?Keysar

单选题He__________at the boy into silence.

单选题 ______ do you change the cell for your watch?

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单选题 ______ I knew him better, I discovered that my impression had been right.