An incident is a/an
a. occurrence.
b. event
c. example.
d. all of the above
b. event
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Will an asteroid ever strike the Earth? We see science fiction movies with suspenseful plots involving
asteroids coming directly toward the Earth. But the catastrophe is avoided, perhaps by deflecting the asteroid with a nuclear-tipped missile, making for sighs of relief and a happy ending. However, asteroids are not science fiction, and there is evidence that they have struck the Earth in the past. In fact, a popular theory relates the extinction of dinosaurs to an asteroid collision some 65 million years ago. Will future collisions occur? Although it is remote, the possibility does exist. We now even have a scale by which damage may be gauged in the event of an impact by an asteroid or comet—the Torino scale. It is sometimes referred to as the "Richter scale for asteroids." (The Richter scale is used to describe the severity of earthquakes.) The Torino scale was intended to serve as a communication tool for astronomers and the general public to assess the seriousness of close encounters or hits by asteroids and comets. An initial version of the scale was developed in 1995 by Professor Richard P. Bizel of the Massachusetts Institute of Technology (M.I.T.). A revised version was presented at a 1999 international conference on Near-Earth Objects, or NEOs (Sun-orbiting asteroids and comets) held in Torino, Italy. This revised version was officially accepted by the conference, hence the name Torino scale. The Torino scale uses numbers and colors to express the estimated risk and damage of an asteroid or comet colliding with the Earth; the estimates are based on the NEO's collision probability1 and kinetic2 energy. A rating of 0 or 1 indicates a low probability of collision. A rating of 10 shows a high probability of collision, with global catastrophic effects. The vast majority of asteroids and comets fall in the 0 category, which (like a low number on the earthquake Richter scale) helps moderate the public's reaction to an asteroid report. In 1998, a false alarm of a possible asteroid encounter received considerable media coverage, raising public concern. With more observations and path calculations, the asteroid was given a 0 rating on the Torino scale, so there was no need for concern. When a new asteroid or comet is discovered, the predictions of the object's path months or years in the future are not too precise. Measurements of the object's orbit must be made over time for calculations that allow for greater certainty in predictions. Fortunately for us, the calculations for the vast majority of asteroids and comets show that there will not be a close approach to the Earth, so a Torino scale designation of category 0 is assigned. What a relief! A rating of 0 or 1 on the Torino scale indicates a. a high probability of collision. b. a low probability of collision. c. the size of the crater on impact. d. the force at which the collision will occur.
C. Complete the following conversation with por or para, as appropriate.
Dora:¿Cuánto trabaja tu hermana Manuela?Benito:Ella trabaja siete días 1.________________________ semana. Trabaja 2.________________________ una cadena (chain) de supermercados.Dora:¡Pero ella nunca tiene un día libre!Benito:3.________________________ ella, está bien así. Llega a las diez de la mañana, trabaja 4.________________________ ocho horas y sale del trabajo a las seis de la tarde. 5.________________________ la noche puede salir con amigos o descansar.Dora:¿No es difícil 6.________________________ ella trabajar tanto?Benito:Ella dice que sí. Especialmente cuando la llaman 7.________________________ trabajar 8.________________________ otro empleado enfermo.Dora:¿Manuela tiene que trabajar durante las vacaciones de verano también?Benito:Normalmente le dan dos o tres semanas libres 9.________________________ visitar a nuestra familia. Saben que nuestros padres viven lejos y que es muy caro viajar 10.________________________ avión. Ella siempre coge el autobús. Blank #1 Fill in the blank(s) with the appropriate word(s).
The British Medical Association (BMA) is a professional organization for doctors in Great Britain. It exists primarily to provide technical and professional information to member doctors and to protect the standards and practices of the medical profession on matters of education, training, qualifications to practice, and discipline in instances of malpractice. The BMA is a good example of an effective associational interest group because, in protecting the professional and financial interest of its members, its professional staff and members take many actions to influence the policies of the British government regarding the health care system. The BMA is concerned about public policies regarding such issues as advertising by professionals, judicial rulings on liability, personal and
business taxation policies, certification of health care paraprofessionals, support for medical research, and so on. The overall organizational pattern used by the writer is a. cause-effect. b. definition. c. classification.
Saw means
A) an old horse B) wise saying C) short poem D) a secret