Problem: Article: You should strive to deliver your opening statement from memorization. Doing so will make your opening statement more genuine, believable, and effective. In order to accomplish this, you should:  Write your opening statement exactly as you want to present it; Reduce it to a general outline; then Reduce it one last time to a key word outline that you may or may not use during your opening statement itself. Practicing will help you become comfortable with your delivery and timing. Also, practicing with others will allow you to get feedback from friends, family, and/or colleagues regarding your content and mannerisms. Before you go into the courtroom to deliver your opening statement, you will want to make any final tweaks you think will make the opening statement perfect. You will have spent so much time preparing and practicing, you will know by this point if anything needs to be added or taken out. Do this at least a day before you deliver your opening statement so you have time to practice your final version.
Summary: Prepare your speech for the day of the trial. Practice your opening statement in front of an audience or in front of a mirror. Make final changes if necessary.

INPUT ARTICLE: Article: These exams are definitely not a walk in the park. The IB is hard for most people (even geniuses like us) so prepare for it! And when — not if, when — you pass your exams, smile and be thankful that it's over. Help the first year students. Work through as many past I.B exams as you can possibly handle!  The questions in your textbook or those which you are completing in class may be drastically easier than the actual exam.

SUMMARY: Revise. Practice.

In one sentence, describe what the following article is about: This may come in handy if you have visited a few sites that you aren't supposed to visit, but you don't want to delete the entire web history. Perhaps you want to keep some information, but delete other data; perhaps you just think it will look suspicious if you delete the entire browser history. Either way, you can select to delete the local record of any and all sites that you have visited since you started using Chrome. Press Ctrl+H or use the menu in the top-right of the browser. Select the box next to each piece of web history that you want to delete. Select as many items as necessary. You can select entire chunks of site data by holding Shift while you click a certain box, then clicking a box further down the list. Use the search box at the top of the History tab to find any links or keywords that you want to erase. This button is only clickable once you have selected at least one website to delete. You will be prompted with a pop-up dialogue box: "Are you sure you want to delete these pages from your history?" Don't hesitate to backtrack and double-check that you aren't about to erase anything important. When you are absolutely sure, you can proceed. Chrome will permanently remove the sites you selected from the browsing history.
Summary: Consider deleting only certain websites from your browsing history. Navigate to the History tab within Chrome. Choose the browsing data items that you want to delete. Press the "Remove selected items" button. Make sure that you want to delete these pages from your history. Click "Remove".

In one sentence, describe what the following article is about: Molarity is equal to the number of moles of a solute divided by the volume of the solution in liters. As such, it is written as: molarity = moles of solute / liters of solution Example problem: What is the molarity of a solution containing 0.75 mol NaCl in 4.2 liters? Finding molarity demands that you have the number of moles and the number of liters. If the problem provides each of these figures, no preliminary calculations are needed. Example problem:  Moles = 0.75 mol NaCl Volume = 4.2 L The resulting quotient will give you the number of moles per liter of solution, otherwise known as molarity. Example problem: molarity = moles of solute / liters of solution = 0.75 mol / 4.2 L = 0.17857142 Round off the number of digits after the decimal point to two or three, depending on your instructor's preference. When you write out the answer, abbreviate "molarity" with "M" and state the chemical abbreviation of the solute involved. Example problem: 0.179 M NaCl
Summary:
Know the basic formula for calculating molarity. Examine the problem. Divide the number of moles by the number of liters. Write your answer.