We will plant trees tomorrow, and I don ’ t know _______Tom will come and join us.

A、flourish B、fade C、stem D、cultivate

A .  The code will compile without changes. B .  The code will compile if public Tree（） { Plant（）； } is added to the Tree class. C .  The code will compile if public Plant（） { Tree（）； } is added to the Plant class. D .  The code will compile if public Plant（） { this（”fern”）； } is added to the Plant class. E .  The code will compile if public Plant（） { Plant（”fern”）； } is added to the Plant class.

A . a great deal of B . much C . a large amount of D . a lot of

A . update B . finish C . outdated D . expire

A、accomplish B、accelerate C、accumulate D、account

A．A.has been told B．B.has told C．C.have been told D．D.have told

A．Storms and floods. B．Disease and fire. C．Less space for their growth. D．Rapid increase of the animal population.

A、 on B、 in C、 at D、 /

A．had planted B．will have planted C．will plant D．has planted

A US doctor has planted under his skin a computer chip (芯片) that can send personal information to a scanner(扫描仪) ,a technology that may someday be widely used as a way to identify (识别) people. The chip gives off information which will be scanned by a hand-held reader. The chip is similar to that planted in more than 1 million dogs, cats and other pets in recent years to track and identify them. The doctor decided to test the chip himself after the World Trade Center disaster(灾难). The dead could have been identified if their names and other important information had been chipped. Officials of the company said they hope to sell the chips to patients with man-made arms or legs or other body parts. The idea is that the chip will provide immediate and correct medical information when it is needed. The information can contain name, telephone number and other information. So it can send out a message that, when connected to a computer, can call up records. The scanner can read it through clothes from over a meter away. The new product also could be used to control prisoners. Workplaces of great importance may want to use the chips for employees, too. Some parents may consider planting chips in young children or elderly relatives who may be unable to say their names, addresses or telephone numbers.Some medical and technology specialists said the product raises new questions about the relationship between humans and computer technology and could cause problems if it is used against someone's wishes, or if your personal information is read by those who should not see it. According to the text, computer chips have already been used to______. A．catch escaped prisoners B．find missing children C．follow lost animals D．treat sick people

A．comfort B．light C．food D．oxygen

对 错

A．ingredient B．reliance C．shelter D．inclination

<img src='https://img2.soutiyun.com/ask/uploadfile/4215001-4218000/184d1c36a8df7b9631df34f8003d21ad.gif' />

The first study was done at Duke University in Durham, North Carolina. Researchers pumped extra carbon dioxide into a test area where pine trees were growing. The trees grew thirty-four percent faster during the first three years. However, in time, the trees slowed to about their normal growth rate. The scientists say this is because trees need other nutrients, such as nitrogen. In the second study, researchers from Duke and Bowdoin College in Brunswick, Maine examined the soil around trees. They discovered that as the leaves broke down into the soil, all the carbon was not trapped in the soil. Much of it was released into the atmosphere as carbon dioxide. The findings of the two studies were published last month in Nature magazine. They suggest there is limited value in planting trees to reduce the carbon dioxide pollution in the atmosphere. Forest planting has been a part of negotiations on a world agreement to reduce greenhouse gases that scientists believe cause global warming. The United States, Canada, Japan and some other industrial countries have supported the idea. But this new research suggests the idea is not as effective as environmental activists had thought. Scientist Ram Oren of Duke University led the study on tree growth. He says that earlier estimates on the ability of forests to absorb carbon dioxide were overly hopeful. Some scientists not involved in the studies say the research provides some of the first evidence on how trees react to carbon dioxide. Other scientists say the research disputes a belief among some coal and power companies. The companies say that rising levels of carbon dioxide in the atmosphere will not create harmful global warming. Instead, they say it will increase forests and other plants. What is the purpose of this passage？ A．Introduce some new ideas about the relationship between trees and carbon dioxide. B．Introduce recent condition of global industrial pollution. C．Call on people to plant more trees to reduce greenhouse gases. D．Point out that power companies should be responsible for the rising levels of carbon dioxide.

A．which B．whose C．of which D．that

A．blowing B． blows C． to blow D． blew