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更多“19. Do not use red ink pen write greeting card, as red ink is a symbol of diffidation.”相关的问题
According to the passage, why do ants use different compounds as trail pheromones？
A．To reduce their sensitivity to some chemicals
B．To attract different types of ants
C．To protect their trail from other species
D．To indicate how far away the food is
Red tides are a global【4】. They have been observed on both the Atlantic and the Pacific coasts of the United States and Canada. They have also【5】in many other places. Though relatively few people are【6】them, red tides are not new.
In the Philippines, a red tide was first seen in the province of Bataan in 1908. Since then, red tides have been seen in many other【7】. A Philippines red tide expert told us that "【8】the fish kills, the Philippines has documented 1, 96 cases of dead shellfish poisoning caused by red tides."
The term “red tide”【9】the discoloration of water that sometimes occurs in certain areas of the ocean or sea. Although the color is often red, it may also be【10】of brown or yellow. The World Book Encyclopedia reports that "the discolored areas may range from【11】a few square yards to more than 2,600 square kilometers."
What causes such discoloration？ Red tides are generally caused by several【12】of single-celled organisms. These tiny organisms have hair-like projections which they use to【13】themselves in water. There are about 2,000 varieties of these organisms, 10 of which carry poisonous【14】These minute organisms usually stay in warm waters with high content of salt.
A red tide occurs when there is a sudden and rapid【15】of these organisms. The concentration of these organisms may【16】to 50,000,000 per quart of water! Although scientists do not fully understand why this happens, it is known that these organisms【17】when certain conditions simultaneously affect the water. These include abnormal weather,【18】temperatures, an oversupply of nutrients in the water, a generous【19】sunlight, and favorable water currents. When a heavy rainfall occurs, minerals and other nutrients are sometimes washed【20】the land into coastal waters. These nutrients can contribute to the breeding of the organisms. The result？ Red tides!
(1)
A．As a result
B．As it is
C．As expected
D．As usual
A．What shall ! use？
B．Where is the dishwasher？
C．Can I do it later？
D．How should I do？
1.The teacher has requested the students to（ ）in red the words which have been spelled incorrectly.
2.The historians use the（ ）on the walls of ancient temples to guide them in their research.
3.During the interview,he asked me to（ ）what kind of things I do in my spare time.
4.A（ ）is the piece of paper on which your doctor writes an order for medicine and which you then give to a chemist or pharmacist to fill the order.
5.He（ ）his low mark to the noisy study environment.
6.My main reason for（ ）to New Scientist is to keep abreast of advances.in science.
听力原文：W: Could you show me how to use this, John？
M: It is fully automatic. All you have to do is to focus on the scene and press the button here.
Q: What are they talking about？
(19)
A．How to use a camera.
B．How to use a washer.
C．How to use a keyboard.
D．How to use a tape recorder.
听力原文：W: What do you use your computer for？
M: At the moment, I'm preparing a presentation for a client, but I must admit to playing games on it too from time to time!
Q: What do we know for sure about the man？
(19)
A．He is using his computer for work purposes.
B．He often plays games on his computer.
C．His computer makes his life easier.
D．His client cannot use a computer.
W: I heard he is thinking of turning it into a restaurant, which isn't a bad idea, because it's still a solid building.
Q: What will Mr. Peterson do with his old house？
(19)
A．He may convert it and use it as a restaurant.
B．He may pull it down and build a new restaurant.
C．He may rent it out for use as a restaurant.
D．He may sell it to the owner of a restaurant.
You must answer this question.
1. Your English friend, Kim, has written to you asking you if you'd like to go to a concert by your favourite band, Red Stone.
Read Kim's letter, on which you have made some notes. Then write a letter to Kim accepting the invitation and giving all the necessary information. You must use all your notes.
Write a letter of between 120 and 180 words in an appropriate style. Do not write any postal addresses.
You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. You create a Button control for the application.You need to ensure that the application meets the following requirements:When the mouse pointer is over the Button control, the background color of the button is set to red andthe Button control appears bigger.When the mouse pointer is not over the Button control, the button returns to its original state.What should you do？（）
A.Create a template. Declare a VisualState element in the template.
B.Create a StoryBoard animation. Add an EventTrigger class to the Button control that begins the StoryBoard animation.
C.Create a ScaleTransform class. Bind the ScaleX and ScaleY properties of the Button control to the Background property by using a custom value converter.
D.Add a method named ChangeAppearance in the code-behind file. Subscribe the ChangeAppearance method to the MouseEnter event of the Button control.
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