¡A leer! La tecnología. Albert Einstein se temía que la tecnología iba a sobrepasar nuestra humanidad. Cuando observamos el uso de los teléfonos inteligentes en todo el mundo y a toda hora nos hace pensar que ese día ya llegó. Es deprimente observar el transporte público en muchos países, donde tanto jóvenes como adultos están ensimismados (absorbed) enviando y leyendo mensajes de texto. Mucha gente parece preferir comunicarse por mensajes de texto que en persona. Hace unos años algunas personas se preocupaban que el correo electrónico estaba deshumanizando el contacto personal, pero con las redes sociales, eso está llegando al colmo de la deshumanización. Una gran parte de la población está conectada al mundo a través de una red social. La mayor parte del intercambio
entre los jóvenes ocurre por medio de alguna tecnología. Debemos asegurarnos que los jóvenes saben relacionarse en persona. Para combatir el fenómeno del énfasis tecnológico, un grupo de padres ha creado el programa Exploremos la naturaleza. En este programa los adolescentes, de entre 13 y 15 años, pasan una semana en las montañas, desarrollando actividades al aire libre y sin oportunidad de accesar ningún aparato tecnológico.¿Cierto o falso? Decide si las siguientes oraciones son ciertas (C) o falsas (F) según la información del texto anterior.Los jóvenes saben relacionarse mejor que loa adultos.
A. cierta
B. falsa
Answer: B
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Choose the best verb from the list to complete each sentence in the present perfect tense. Do not use any verb more than once.
beginnen dauern essen fragen geben gehen hören machen nehmen regnen sagen singen tanzen tragen trinken verstehen 1. Im Musical haben alle sehr schön ________________ und________________. 2. Hast du das neue Lied von Wir sind Helden ________________? 3. Weil ich krank war, habe ich ein paar Aspirin ________________. 4. Ich habe Benni ________________ , ob er Tennis spielt. 5. Wie lang hat die Chemie-Vorlesung ________________? 6. Weil es so kalt gewesen ist, habe ich meinen Wintermantel ________________. 7. Das Wetter war wirklich schlecht, es hat den ganzen Tag ________________. 8. Warum bist du so früh nach Hause ________________? 9. Bei Leon haben wir Pizza gegessen und Cola ________________. 10. Schade! Der Film hat um 8 Uhr ________________ und jetzt ist es schon 8.15 Uhr. 11. Er hat viel gesprochen, aber ich habe wirklich nichts ________________!
A coherent paragraph will have __________.
A. a topic sentence embedded in the middle B. a connected line of thought C. few transitions D. no concluding sentence
The number that belongs in place of [D] is
The consumption of food containing pathogenic microorganisms—those capable of causing disease—results in food infections. The microorganisms that most commonly 1 cause food infections are bacteria and viruses; however, other tiny organisms and nonliving particles can also contaminate foods. Bacteria are microorganisms that lack a true cell nucleus and reproduce either by division or by forming spores. Many thrive in the intestines of birds and mammals, including poultry, pigs, and cattle, so foodborne infection often results from consuming 2 undercooked or raw meats, foods contaminated with juices from raw meats, or produce, milk, or water contaminated with infected animal feces. Bacteria cause about 39% of all foodborne illnesses. Of the most common bacterial causes of foodborne illness, the bacterium responsible for the most illnesses, hospitalizations, and deaths is Salmonella. Viruses are much smaller than bacteria, and they can’t survive apart from living cells. Just one type, called norovirus, causes nearly all foodborne viral illness in the United States and 58% of all foodborne illness from any known cause; it is responsible for more foodborne illness than all other viruses, bacteria, and parasites combined. Norovirus is so common and contagious that many people refer to it simply as “the stomach flu.” 3 Norovirus illness typically comes on suddenly and results in stomach cramps, vomiting, and diarrhea. In healthy people, the symptoms typically resolve spontaneously in a day or two. Raw foods can harbor norovirus, and it can spread from person to person. Hepatitis A and hepatitis E viruses also commonly contaminate food during harvesting, processing, or preparation. They can cause acute liver damage and even death. Parasites are microorganisms that simultaneously derive benefit from and harm their host. They are responsible for only about 2% of foodborne illnesses. The most common 4 culprits are helminths (multicellular worms such as tapeworms, flukes, and roundworms) and protozoa (single-celled organisms that commonly cause waterborne illnesses). Fungi are plantlike, spore-forming organisms that can grow as either single cells or multicellular colonies. Two types of fungi are yeasts, which are globular, and molds, which are long and thin. Less than 1% of foodborne illnesses are caused by fungi. This is due in part to the fact that very few species of fungi cause serious disease in people with healthy 5 immune systems, and those that do cause disease in humans are not typically foodborne. In addition, unlike bacterial growth, which is invisible and often tasteless, fungal growth typically makes food look and taste so unappealing that we immediately discard it. a. 58%. b. 39%. c. 2%. d. Less than 1%.
The dentist told me to floss my teeth during my visit with a stern look
a) During my visit with a stern look, the dentist told me to floss my teeth. b) During my visit, the dentist told me to floss my teeth with a stern look. c) During my visit, the dentist, with a stern look, told me to floss my teeth. d) The dentist, with a stern look, told me to floss my teeth during my visit.