Question 1 with 1 blankana villegas conoció a su , frank petersen, por medio de internet. question 2 with 1 blankla afición de ana y frank por los juegos de fue la excusa para conocerse. question 3 with 1 blanklas parejas interculturales deben luchar contra los de sus familias. question 4 with 1 blankantes de la globalización, las personas se relacionaban solo con la gente de su . question 5 with 1 blankla independencia que ahora tienen los jóvenes les permite conocer otras . question 6 with 1 blanklos hombres de cataluña celebran el día de regalando una rosa a sus amadas.

47. a student is frightened by a loud noise, which results in a hormone being released into the blood. the hormone causes the student's heart to beat rapidly. the two systems that work together to cause this reaction are the endo- crine system that secretes the hormone and the (1) nervous system (3) excretory system (2) reproductive system (4) digestive system

Rick read the following argument: although the gas helium is the second most abundant element in the known universe, its supplies on earth are limited. most helium comes either from mining minerals or as a byproduct of natural gas. although helium is in low supply, the demand for it is quite high. it can be used for a variety of medical purposes, including the treatment of breathing problems such as asthma. helium also has heart and nerve protective properties, and doctors are beginning to use it in surgery. yet current laws make recycling helium unprofitable. for the sake of our health, those laws must change. which statement would be the most appropriate in a conclusion to this argument? why? a. “these laws are unlikely to change, so we must take steps to manufacture helium on our own.” this statement makes the logical leap that if we can't recycle helium, we should create it. b. “until human disease is a thing of the past, we cannot support laws that put helium supplies at risk.” this restates the claim of this argument, which is that we should do everything in our power to treat human diseases. c. “if there is any practical use for helium other than medicine, laws should change to protect current supplies of the gas.” this sentence summarizes one of the major points of the argument, which is that helium reserves are in low supply. d. “human health depends on helium, and therefore it is necessary to change the laws that make it hard to acquire.” this restates the claim of the argument and also summarizes the supporting evidence that illnesses can be treated by helium.

Afim de evitar repetições o autor utilizou várias palavras para tratar do elevador. assinale a alternativa em que todas as palavras foram usados com esse objetivo a) jaula, cabina e edifício b) carro, prisão e toca c)cabina, coração e prisão d)edifício, caixa e gaoila