题目内容
"She most be in the dormitory now!" "No, she ______ be there. I saw her in tile classroom
查看答案
搜索结果不匹配？点我反馈
更多问题
Today, most countries in the world have canals. Some canals, such as the Suez or the Panama, 【C1】______ ships weeks of time by making their voyage a thousand miles shorter. Other canals permit boats to reach cities that are not located on the coast. 【C2】______ other canals drain lands where there is too much water, help or 【C3】______ fields where there is not enough water.
The 【C4】______ of a canal depends on the kind of boats going through it. The canal must be wide enough to permit two of the 【C5】______ boats using it to 【C6】______ each other easily. It must be deep enough to leave about two feet of water 【C7】______ the keel of the largest boat using the canal. Some canals have sloping sides, while others have sides that are nearly 【C8】______ . Canals that are cut through rock can have nearly vertical sides. 【C9】______ , canals with earth banks may 【C10】______ if the angle of their sides is too steep. Some canals are lined with brick, stone, or concrete to keep the water 【C11】______ soaking into the mud. This also permits ships to go at 【C12】______ speeds, since they cannot make the banks fall in by 【C13】______ up the water. In small canals with mud banks, ships and barges (大平底船) must 【C14】______ their speed.
When the canal goes 【C15】______ different levels of water, the ships must be 【C16】______ or lowered from one level to the other. This is generally done by 【C17】______ of locks. If a ship wants to go up to higher water, the lower end of the lock opens to let the boat in. Then this gate closes, and the water is let into the lock chamber from the upper level. This raised the level of the water in the lock 【C18】______ it is the same as the upper level of water. Now the upper gates can be opened to 【C19】______ the ship into the higher water. Sometimes a canal contains a series of locks when the 【C20】______ in levels is very great.
【C1】
听力原文： Some desert animals can survive the very strong summer heat and dryness because they have very unusual characteristics. The camel, for example, can bear an increase in the temperature of its body and its blood of 9℃. In addition, it can drink an enormous amount of water at one time, then store sufficient water in its red blood cells and other parts of its body to supply its needs for two weeks or more. However, most animals need to maintain a fairly constant body temperature, and will die if it rises more than 5℃. Therefore, they need to find some ways to avoid the strong sun rays. Nor can many animal either store or produce water in their bodies as the camel can. So they must find ways to reduce water loss from their bodies to the lowest degree.
Because very few desert animals can survive the high rays and the temperature, most of them are active during the night. Only after the sun has set does the desert come fully of life. The night is relatively cool, and the darkness provides protection, not only from the sun but also from other animals and from the birds. So the coming of darkness is the signal for the large majority of animals and insects to continue their search of water and food, when morning comes, most of them seek shelter again; many go underground; nearly all find somewhere shady and they can avoid the sun rays there.
What is the best title of the passage？
听力原文：W: This food is terrible! I can't even finish my dinner.
M: I know. You think with all the money we paid for room and board, the university could hire a better food service？ Where are you headed next？
W: I'm going over to the student recreation center to play some bridge.
M: You are spending your time on a card game？
W: Not just any card game. It's one of the most strategic there is.
M: So I have heard. Don't you play with a partner？
W: Yeah! Four people play, two against the other two.
M: So, you try to play in cooperation with your partner.
W: Actually, the cards of one of the four players are turned face up. That player is called the dummy.
M: I wouldn't want to be called that. When you are the dummy, what do you do while the cards are being played？
W: Anything you want. Sit there and study, shuffle another deck, get snacks for everyone ... I like to stand behind my partner and watch.
M: You know, I've heard that bridge is habit-forming. You should be careful not to play so much that you don't get your studying done.
W: Don't worry about me. I only play Thursdays after dinner, and sometimes when they need a forth player. If you like, I could teach you.
M: Thanks, but I have a pretty heavy workload this semester. I already spend my evenings doing things I don't really know how to do yet.
How does the woman plan to spend her evening？
治疗宜选用的方剂是
微信支付 
支付宝支付