1. Una característica sobresaliente de los romances es su uso creador de tiempos verbales. Todos los hechos narrados ocurren en el pasado, y, de ceñirse siempre a la verdad temporal, los romances caerían en la monotonía y en el aburrimiento. Con intuición poética tan espontánea como admirable, la voz colectiva comenzó a jugar con los tiempos verbales, trayendo acontecimientos pasados al presente y a veces insinuando el futuro. Este fenómeno, presente también por exigencias del metro y de la rima, da lugar a combinaciones de tiempos aparentemente inapropiadas. Tu tarea consiste en señalar y comentar en qué versos del «Romance del rey moro que perdió Alhama», esto ocurre, y por qué.

Generate a research topic/hypothesis, for example some type of old's wives tale or cliche. identify the population of interest. how will you will randomly select in order to get a representative sample? how you will randomly assign the sample into the experimental and control group? what variable(s) will each group receive? identify the independent and dependent variables. explain how you will control for outside/confounding variables. the following is an example: example: topic: does more time spent studying lead to better grades on exams in college students. population of interest: all students enrolled at college random selection: access database with the names of all students and every 5th student will be involved in study. random assignment: every other student gets sent to the experimental group. experimental group: studies for two hours per night 5 days a week. control group: studies for less than 2 hours per night 5 days a week. independent variable: time spent studying dependent variable: exam scores control for: all students study on same nights, have same instructor, take same posttest, study same material, take exam at same time, etc. everything should be the same between the two groups except the amount of time spent !

Jacob’s four-month-old infant is crying continuously. while jacob’s wife suggests that he pick up the baby, jacob’s mother thinks that picking up the baby each time she cries is bad for the baby. why is jacob’s wife right? a. babies sleep better when carried. b. babies learn to cry whenever they want someone to hold them. c. babies may choke if crying while lying on their back. d. babies develop a sense of trust that someone is there to provide care.

Which of these is a disadvantage of hydrogen fuel cells? a. engines that use hydrogen fuel are more efficient than gasoline-powered engines. b. the only emission produced by hydrogen fuel cells is water. c. hydrogen fuel is continually available and useful for heating. d. hydrogen fuel is often purified in a process that emits lots of greenhouse gases.