【C6】A．thatB．whereC．itD．what

【C5】

A．height

B．degree

C．scale

D．domain

【C4】

A．Besides

B．Apart from

C．In order to

D．Instead of

【C3】

A．continual

B．stable

C．constant

D．hot

【C2】

A．react

B．reflect

C．reduce

D．repel

0 words. Children Must be Taught to Tell Right from Wrong Many of todays young people have a difficult time seeing any moral dimension to their actions. There are a number of reasons why thats true, but none more prominent than a failed system of education that eschews teaching children the traditional moral values that bind Americans together as a society and a culture. That failed approach, called "decision-making" , was introduced in schools 25 years ago. It tells children to decide for themselves what is right and what is wrong. It replaced "character education". Character education didnt ask children to reinvent the moral wheel; instead, it encouraged them to practice habits of courage, justice and self-control. In the 1940s, when a character education approach prevailed, teachers worried about students chewing gum; today they worry about robbery and rape. Decision-making curriculums pose thorny ethical dilemmas to students, leaving them with the impression that all morality is problematic and that all questions of right and wrong are in dispute. Youngsters are forced to question values and virtues theyve never acquired in the first place or upon which they have only a tenuous hold. The assumption behind this method is that students will arrive at good moral conclusions if only they are given the chance. But the actual result is moral confusion. For example, a recent national study of 1,700 sixth-to-ninth-graders revealed that a majority of boys considered rape to be acceptable under certain conditions. Astoundingly, many of the girls agreed. This kind of moral illiteracy is further encouraged by values-education programs that are little more than courses in self-esteem. These programs are based on the questionable assumption that a child who feels good about himself or herself wont want to do anything wrong. But it is just as reasonable to make an opposite assumption: namely, that a child who has uncritical self-regard will conclude that he or she cant do anything bad. Such naive self-acceptance results in large part from the non-directive, non-judgmental, as-long-as-you-feel-comfortable-with-your-choices mentality that has pervaded public education for the last two and one-half decades. Many of todays drug education, sex education and values-education courses are based on the same 1960s philosophy that helped fuel the explosion in teen drug use and sexual activity in the first place. Meanwhile, while educators are still fiddling with outdated "feel-good" approaches, New York, Washington, and Los Angeles are burning. Youngsters are leaving school believing that matters of right and wrong are always merely subjective. If you pass a stranger on the street and decide to murder him because you need money—if it feels right—you go with that feeling. Clearly, murder is not taught in our schools, but such a conclusion—just about any conclusion—can be reached and justified using the decision-making method. It is time to consign the fads of "decision-making" and "non-judgmentalism" to the ash heap of failed policies, and return to a proved method. Character education provides a much more realistic approach to moral formation. It is built on an understanding that we learn morality not by debating it but by practicing it.

口中的最简单同时也是最有效的工具。全国各地的筷子大小基本一样，而用材的种类则各有不同，选材包括竹子、木材、象牙、塑料、铝、银、金等。特长的竹筷通常为厨房用筷。过去人们用嵌有银器的木筷来测试是否有人在餐中下毒，因为银器碰到一些有毒物品会起变色反应。

st likely to agree?

A．Neutrino astronomy will supersede all present forms of astronomy.

B．Neutrino astronomy will be abandoned if the DUMAND project fails.

C．Neutrino astronomy can be expected to lead to major breakthroughs in astronomy.

D．Neutrino astronomy will disclose phenomena that will be more surprising than past discoveries.

The passage states that interactions between neutrinos and other matter are______.

A．rare

B．artificial

C．undetectable

D．unpredictable

According to the passage, the primary use of the apparatus would be to______.

A．increase the mass of a neutrino

B．interpret the information neutrinos carry with them

C．study the internal structure of a neutrino

D．detect the presence of cosmic neutrinos

the detection of photons—quanta of electromagnetic radiation. Yet mere is another form. of radiation that permeates the universe: neutrinos. With(as its name implies)no electric charge, and negligible mass, the neutrino interacts with other particles so rarely that a neutrino can cross the entire universe, even traversing substantial aggregations of matter, without being absorbed or even deflected. Neutrinos can thus escape from regions of space where light and other kinds of electromagnetic radiation are blocked by matter. Furthermore, neutrinos carry with them information about the site and circumstances of their production: therefore, the detection of cosmic neutrinos could provide new information about a wide variety of cosmic phenomena and about the history of the universe. But how can scientists detect a particle that interacts so infrequently with other matter? Twenty-five years passed between Paulis hypothesis that the neutrino existed and its actual detection: since then virtually all research with neutrinos has been with neutrinos created artificially in large particle accelerators and studied under neutrino microscopes. But a neutrino telescope, capable of detecting cosmic neutrinos, is difficult to construct. No apparatus can detect neutrinos unless it is extremely massive, because great mass is synonymous with huge numbers of nucleons(neutrons and protons), and the more massive the detector, the greater the probability of one of its nucleons reacting with a neutrino. In addition, the apparatus must be sufficiently shielded from the interfering effects of other particles. Fortunately, a group of astrophysicists has proposed a means of detecting cosmic neutrinos by harnessing the mass of the ocean. Named DUMAND, for Deep Underwater Muon and Neutrino Detector, the project calls for placing an array of light sensors at a depth of five kilometers under the ocean surface. The detecting medium is the seawater itself: when a neutrino interacts with a particle in an atom of seawater, the result is a cascade of electrically charged particles and a flash of light that can be detected by the sensors. The five kilometers of seawater above the sensors will shield them from the interfering effects of other high-energy particles raining down through the atmosphere. The strongest motivation for the DUMAND project is that it will exploit an important source of information about the universe. The extension of astronomy from visible light to radio waves to x-rays and gamma rays never failed to lead to the discovery of unusual objects such as radio galaxies, quasars, and pulsars. Each of these discoveries came as a surprise. Neutrino astronomy will doubtless bring its own share of surprises.

Which of the following titles best summarizes the passage as a whole?

A．At the Threshold of Neutrino Astronomy

B．Neutrinos and the History of the Universe

C．The Creation and Study of Neutrinos

D．The DUMAND System and How It Works