4.NOT
When using any search engine, there are actually functions (terms) known as Boolean operators that one can type into the search bar that assist in the research one is doing. You know how when searching the internet, you might have to sift through many “hits” that you find useful because information that is not useful keeps being included? What you can do, thus, is include the command “NOT” (in all capital letters) after your main search terms followed by words you no longer want to see, and the search engine should provide results without the terms following NOT. For instance, you if did an internet search for “pets” but did not want your results to include dogs, if you typed in the following, your results would be largely without the word “dogs”:
<em>pets NOT dogs</em>
The answer is probably a/1 but i’m not 100 percent sure!!!
When the two comets collided, it was a moment of impact.
The students had a moment of impact in the hallway when they ran into each other.
The correct answer is C. Reader's guide.
Usually, there is a reference list for all the available magazine articles that is arranged alphabetically by subject. This is called a reader's guide. A newspaper index is a reference for newspapers base on the issue date while a card catalog is a reference in finding authors of books. So the correct answer is C. I hope this answer helped you.