Problem: Article: Urine analyzers have seen it all and know to test for commercially available test-masking chemicals. Most household substances, such as bleach, salt or vinegar, will radically alter the pH of your urine, which will make it obvious that you have tampered with the sample. Diluting the sample by adding water can also raise red flags by changing the color and/or temperature of your urine; a clear sample will probably be rejected offhand, as will a lukewarm one.  Ignore the rumor going around that drinking bleach will purify your urine. Drinking bleach can corrode your mouth, throat, and stomach, potentially killing you. What's more, it won't even mask your sample. Don't fall for false advertising on products that say your test will come up negative if you add the substance to your urine. They don't work. By increasing your intake of liquids, you will be able to (somewhat) dilute the test sample. This won't work very well if you're a heavy user, but it could do the trick if you've only used a few times.  There's no special drink or ingredient that will help to "flush" your system or cleanse you any better than water does. There is no evidence that substances like goldenseal, vinegar, niacin, or vitamin C have any effect on your levels of drug metabolites.  Take some vitamin B pills the day before your test to make your urine look yellow. If it's too clear, test evaluators will be suspicious. This will help pump drug metabolites from your body. Drink a lot of water the morning of the test and make an extra effort to pee a lot before you take it.  Boost your fluid output with some sort of diuretic. This will stimulate urination and will help flush your system. Diuretics include coffee, tea, and cranberry juice. Stronger diuretics, such as furosemide, are available by prescription only. Drug metabolites build up in your body while you're sleeping, so your first stream of the day will have a higher concentration. Make sure you urinate before you have to take the sample, and drink plenty of water so your urine will be more diluted. If you aren't being watched, make sure to pee in the toilet first and then in the sample cup; your initial urine stream will contain more metabolites. This is a lot trickier than it sounds, so consider it a last-ditch attempt (and one for which you'll likely be penalized if you get caught). You can either buy fake urine or find a clean donor. The trick will be to maintain the sample at the proper temperature for the urinalysis (around 91 to 97 F) and smuggle it into the testing area. Kits containing both fake urine and the equipment needed to keep it at the right temperature can be purchased online or in smoke shops.  Synthetic urine passes most tests, but some states have started testing for uric acid. Make sure your sample has uric acid listed as an ingredient. The synthetic urine should also have a smell. Scentless urine is suspicious to test evaluators. It's essential to keep the sample at the right temperature. If the temperature is too cold or hot, it's a dead giveaway that the sample has been tampered with. Using a donor is more risky than using fake urine, because you never know what else might show up in that person's test. You can test it yourself using a test strip available at smoke shops and most drugstores. Use the sample within 48 hours, after which it gets dark in color and the pH level begins to change.
Summary: Don't try to mask or dilute the sample. Drink a lot of water starting the day before the test. Urinate as much as possible before the test. Consider substituting synthetic or clean urine for your own.

INPUT ARTICLE: Article: If the noun you are referring to is near to you, either physically or figuratively, you can replace it with these.  I'm holding three chocolate bars. Do you want all of these? (These replaces chocolate bars.) Would you like to borrow some books? Here, take these. (These replaces books.)  These are so beautiful! Thank you for the flowers. (These replaces flowers.) This and these are both used to refer to something that is closer to the speaker. You can use these to draw particular attention to items.   These books on the shelf belong to Rajeev. [The books are near the speaker.] Look at all these bracelets on my wrist! [The bracelets are on the speaker's wrist, so they're nearby.] Who put these cupcakes in the refrigerator? [Presumably, the speaker is close to the cupcakes.] This and these are also used to express figurative distances, particularly distances having to do with time. Use these when something is happening in the present, has happened in the recent past, or will happen in the near future.   These shows I've been watching are absolutely extraordinary. [The shows have been watched in the recent past.] Have you seen these letters to the editor in today's news? [The letters have been published in today's newspaper.] Why don't you take these books with you when you go? [The books will be taken by the other person in the near future.] If you are introducing more than one person to someone else, you can use these to begin your sentence.  For example: "These are my classmates, Sean and Adrienne." However, in English we do not use these to refer directly to people: "These are Sean and Adrienne" is incorrect. Instead, you would say "This is Sean and this is Adrienne." If introducing yourself, as when answering the phone, use this: "Hello, this is Chang."

SUMMARY: Use these to replace nouns that are nearby in space and time. Use these to refer to something that is physically nearby. Use these to describe when something is figuratively nearby. Use these to introduce people to others.

In one sentence, describe what the following article is about: . Some people need a very loud, harsh alarm, some can’t wake up to the radio, and some find that gradual waking works best. There are even many varieties of alarms to stick near you that will vibrate to awaken you, including a vibrating pillow, wrist band, and devices that clip on to your pillow or that go between your mattress.  Consider what types of features you want the alarm clock to have, such as sounds, brightness, etc.  Experiment and decide what’s best for you. Ask your friends and try to borrow a device before spending too much. Don’t forget your neighbors. Some alarm clocks are really loud and might not be suited for a flat. Discuss the alarm with your partner (if you have one). You don’t want to pick something that he or she hates. Make sure the alarm clock is set before going to sleep. Set it in advance for the whole week if possible. It is quite common for heavy sleepers to turn the alarm off in their sleep. If you need to get out of bed to turn it off, you will already increase your chances of staying awake.  You can also set multiple alarm clocks in the room. Set them five to ten minutes apart to be sure to be unable to take them off in one round. Set your alarm earlier than necessary. For example, say you want to get up at 7:00 a.m., so you set your alarm about 10-15 minutes earlier, like 6:45 a.m. If your spouse or partner, or just a roommate, doesn’t have trouble waking up on time, ask him or her to help you wake up and to make sure you stay awake.  You could also ask a friend to call you in the morning and talk to you for a minute or so until you become fully awake. Wake up calls to your home or cell phone are now available by subscription or for one-time calls. Pick someone reliable. You don’t want to miss your job interview because your roommate found it funny to let you sleep until noon. Give him precise instructions and write the time at which he should wake you up on a post-it. Because of nightly hormonal changes to natural sleep cycles, many people find that they wake up a few minutes before their alarm goes off.  If this occurs, consider it a sign that you’re ready to get up. If you go back to sleep and wait for the alarm, you’ll likely feel more drowsy.
Summary:
Get the right alarm clock Position the alarm clock far from the bed. Get someone to help you. Get out of bed if you wake up a few minutes before your alarm rings.