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A)有一种有效的方法可以控制昆虫，这种方法给化学带来了真正的变化。
B)有一种真正有效的化学方法可以控制昆虫，你也可以选择其他方法 。
C)除了使用化学方法控制昆虫外，还有一种真正有效的方法可供使用。
D)对化学方法的使用要加以控制，不然真的会影响到昆虫，甚至使其变异。
E)除了使用化学方法控制昆虫外，还有其它各种很有效的方法可供使用。
答案
更多“A truly effective variety of alternatives to the chemical control of insects are avai”相关的问题
第1题
Once you reach little milestones five minutes of successful patience you’ll begin to see that you do, indeed, have the capacity to be patient, even for longer periods of time. Over time, you may even become a patient person.
Being patient will help you to keep your perspective. You’ll see even a difficult situation, say your present challenge, isn't life or death but simply a minor obstacle that must be dealt with. Without patience, the same scenario can become a major emergency complete with yelling, frustration, hurt feelings, and high blood pressure. It's really not worth all that. Whether you’re needing to deal with children, your boss, or a difficult person or situation if you don’t want to sweathe small stuff, improving your patience level isa great way to start.
(1)The best title for this selection is ________.
A、The Art of Patience
B、Patience and Perspective
C、Become More Patient
D、The Effective Ways to Patience
(2)Which of the following is not TRUE？
A、Creating actual practice periods is the only effective way to deepen patience.
B、Our intention may strengthen our capacity for patience.
C、Success feeds on patience.
D、We can deepen our patience by practice.
(3)According to the passage, if we want to be patient, ________.
A、we should have 5-minute practice everyday
B、we should reach little milestones—five minutes of successful patience first
C、we could create actual practice periods and practice
D、We should be perspective
(4)With patience, ________.
A、we will see a difficult situation as death
B、we will see a difficulty situation as a minor obstacle
C、we can deal with children, your boss, or a difficult person or situation easily
D、we would never be hurt
(5)Without patience, when we see the same difficult situation, _______.
A、we will cry
B、we regard it as a major emergency
C、we will sweat
D、we will improve our patience level
第2题
Kevin Haley of Symantec, a firm that makes anti-virus software, thinks that one reason SoBig. F was so much more effective than other viruses that work this way is because it was better at searching hard drives for addresses. Brian King, of CERT, an internet-security centre at Carnegie-Mellon University in Pittsburgh, notes that, unlike its precursors, SoBig. F was capable of "multi-threading", it could send multiple e-mails simultaneously, allowing it to dispatch thousands in minutes.
Blaster worked by creating a "buffer overrun in the remote procedure call". In English, that means it attacked a piece of software used by Microsoft's Windows operating system to allow one computer to control another. It did so by causing that software to use too much memory.
Most worms work by exploiting weaknesses in an operating system, but whoever wrote Blaster had a particularly refined sense of humour, since the website under attack was the one from which users could obtain a program to fix the very weakness in Windows that the worm itself was exploiting.
One Way to deal with a wicked worm like Blaster is to design a fairy godmother worm that goes around repairing vulnerable machines automatically. In the case of Blaster someone seems to have tried exactly that with a program called Welchi. However, according to Mr. Haley, Welchi has caused almost as many problems as Blaster itself, by overwhelming networks with "pings" signals that checked for the presence of other computers.
Though both of these programs fell short of the apparent objectives of their authors, they still caused damage. For instance, they forced the shutdown of a number of computer networks, including the one used by the New York Times newsroom, and the one organising trains operated by CSX, a freight company on America's east coast. Computer scientists expect that it is only a matter of time before a truly devastating virus is unleashed.
SoBig. F damaged computer programs mainly by ______.
A．sending them an overpowering number of messages
B．harvesting the addresses stored in the computers
C．infecting the computers with an invisible virus
D．destroying the anti-virus software of the computers
第5题
Part A
Directions: Read the following four texts. Answer the questions below each text by choosing A, B, C or D. (40 points)
The destruction of our natural resources and contamination of our food supply continue to occur largely because of the extreme difficulty in affixing legal responsibility on those who continue to treat our environment with reckless abandon. Attempts to prevent pollution by legislation, economic incentives and friendly persuasion have been met by law-suits, personal and industrial denial and long delays not only in accepting responsibility, but more importantly, in doing something about it.
It seems that only when, government decides it can afford tax incentives or production sacrifices is there any initiative for change. Where is industry's and our recognition that protecting mankind's great treasure is the single most important responsibility？ If ever there will be time for environmental health professionals to come to the frontlines and provide leadership to solve environmental problems, that time is now.
We are being asked, in fact, the public is demanding that we take positive action. It is our responsibility as professionals in environ mental health to make the difference. Yes, the ecologists, the environmental activists and the conservationists serve to communicate, stimulate thinking and promote behavioral change. However, it is those of us who are paid to make the decisions to develop, improve and enforce environmental standards, I submit, who must lead the charge.
We must recognize that environmental health issues do not stop at city limits, county lines, state or even federal boundaries. We can no longer afford to the tunnel-visioned in our approach. We must visualize issues from every perspective to make the objective decisions. We must express our views clearly to prevent media distortion and public confusion. I believe we have a three-part mission for the present. First, we must continue to press for improvements m the quality of life that people can make for themselves. Second, we must investigate and understand the link between environment and health. Third, we must be able to communicate technical information in a form. that citizens can understand. If we can accomplish these three goals in this decade, maybe we can finally stop environmental degradation, and not merely hold it back. We will then be able to spend pollution dollars truly on prevention rather than on bandages.
We can infer from the first two paragraphs that the industrialists disregard environmental protection chiefly because ______.
A．they are unaware of the consequences of what' they are doing
B．they are reluctant to sacrifice their own economic interests
C．time has not yet come for them to put due emphasis on it
D．it is difficult for them to take effective measures
第6题
It can be inferred that truly reasonable men ______.
A．can't get a hearing
B．are looked down upon
C．are persecuted
D．have difficulty in advocating law enforcement
第8题
A．rather
B．also
C．yet
D．so
第9题
Why is it that the global telegraph network was truly revolutionary？
[A] It has changed the way we do business and communicate.
[B] It makes virtual communities possible.
[C] It makes real-time global news service available.
[D] It makes world peace.
第10题
