<span>Antibacterial soap may have harmful effects.
The best way to determine the main idea of the text after reading it is to think about what you would tell her friend the passage is about. Then, if you have choices, decide which choice best matches. In this passage, it gives two ways in which antibacterial soap can be harmful. It can kill good bacteria, and its constant use can contribute to drug resistance.
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<span>The question says,'before you use one of the encyclopedias, check .......... its copyright date'. The correct option is A. This is because, the statement is referring to only one of the encyclopedias, and the correct possessive noun for an inanimate object like encyclopedia is it's. 'Their' will only be correct if the statement is referring to all the encyclopedias.</span>
The closing of a presentation should end with either a recap of what your presentation discussed or with a simple conclusion to put an end to your thoughts. These two options would help your presentation flow together fluently. More than likely, you will get an A if you formed the presentation in an organized manner and put correct and accurate information into the body of your presentation.
Hopefully this helps :)