The next question refers to this mystery rocks! by cynthia schlagel. the sentences have been numbered to you identify them more easily. this mystery rocks! by cyntha schlagel. (para. 1) 1 the drifting rocks are a strange phenomenon still unexplained by science. 2 located in death valley, california, the rocks sit on hot, flat ground. 3 unlike normal rocks, they have trails etched behind them as if they have traveled across the sand. 4 some trails are only a few feet. 5 some trails are over a half a mile long. 6 each trail is as baffling as the next. (para 2.) 7 the variety of rock movement has baffled scientists for decades. 8 some rocks seem to roll as they move forward. 9 some take unexplainable routes. 10 large ones have traveled past small ones that have stayed still. 11 some scientists suggest that the rocks are pushed by wind. 12 others believe they slide on small amounts of ice or mud. 13 so far, research has not confirmed any theory. which sentence best identifies the main idea of paragraph two? a. scientist are baffled by the different ways the rocks move. b. scientist are confused by the different ways the rocks move, and the theories involving wind, ice, and mud have not been proven. c. scientist have theories on how the rocks move. d. the rocks have stumped scientist because some roll, some take unexplainable routes, and some have traveled past ones that have stayed still, but scientist have theories that the rocks are pushed by wind or slide by ice and mud.

The sentence which best identifies the main idea of paragraph two is the following one:

B. Scientists are confused by the different ways the rocks move, and the theories involving wind, ice, and mud have not been proven.

Right in the beginning of paragraph two, it is said that scientists are baffled by the variety of rock movement. Then, there is the description of their movement and some possible reasons for it to happen (wind, ice and mud) are suggested by scientists. The paragraph ends with the statement that none of the theories have been confirmed by research. Therefore, letter B summarizes the main idea of the paragraph very well.

is is b

Explanation:

just did the test

1. read the following excerpt from franklin d. roosevelt's "fireside chat 19":

on the other side of the picture, we must learn also to know that guerilla warfare against the germans in, let us say serbia or norway, us; that a successful russian offensive against the germans us; and that british successes on land or sea in any part of the world strengthen our hands.

remember always that germany and italy, regardless of any formal declaration of war, consider themselves at war with the united states at this moment just as much as they consider themselves at war with britain or russia. and germany puts all the other republics of the americas into the same category of enemies. the people of our sister republics of this hemisphere can be honored by that fact.  

the true goal we seek is far above and beyond the ugly field of battle. when we resort to force, as now we must, we are determined that this force shall be directed toward ultimate good as well as against immediate evil. we americans are not destroyers — we are builders.

analyze the effectiveness of this excerpt. how does it function within the speech as a whole? how does the structure of the excerpt to convey the speech's purpose and key points? support your argument with evidence from the speech. (10 points)