1. Which of the following is a strong thesis statement?
A. Inherit the Wind is a play about racism.
B. Why is U2 one of the most popular bands in the world?
C. Tax reform is not an adequate solution to America's current economic
problems
D. This paper will examine the causes and effects of the Civil War.

Magnesium is the fourth most abundant mineral in the body and is essential to good health. magnesium is needed for more than 300 biochemical reactions in the body. it maintain normal muscle and nerve function, keep bones strong, keep one’s heart rhythm steady, and supports a healthy immune system. magnesium also regulate blood sugar levels, promotes normal blood pressure, and may play a role in energy metabolism and protein synthesis. doctors and scientists are trying to determine whether magnesium may play a role in preventing and managing disorders such as hypertension, cardiovascular disease, and diabetes. which is the main idea of this paragraph? a. the role of magnesium in human nutrition is being studied intensely. b. magnesium may be related to the body’s metabolism and other healthy functions. c. magnesium appears to contribute to hypertension, cardiovascular disease, and diabetes. d. magnesium and a healthy immune system are separate diseases.

(1) fire extended humans’ geographical boundaries by allowing them to travel into regions that were previously too cold to explore. (2) it also kept predators away, allowing early humans to sleep securely. (3) fire, in fact, has been a significant factor in human development and progress in many ways. (4) other obvious benefits of fire are its uses in cooking and in hunting. (5) probably even more important, however, is that learning to control fire allowed people to change the very rhythm of their lives. (6) before fire, the human daily cycle coincided with the rising and setting of the sun. (7) with fire, though, humans gained time to think and talk about the day’s events and to prepare strategies for coping with tomorrow. the sentence that expresses the main idea is: (type the number of the sentence. then click “go.”)

Read these lines from denise levertov's poem "in thai binh (peace) province": it is that life, unhurried, sure, persistent, i must bring home when i try to bring the war home. child, river, light. here the future, fabled bird that has migrated way from america, nests, and breeds, and sings, common as any sparrow. which statement best interprets the author's use of metaphor in these lines? a. the metaphor of home suggests that american foreign policy should turn inward. b. the metaphor of the river suggests that life moves ear forward. c. the metaphor of the fabled bird suggests that the war has left americans divided. d. the metaphor of the fabled bird suggests that vietnam will rise to fight again.