Read the following article and select the best answer. Article: Following some of the tips for green living helps save our planet. All of these involve just a few changes to our daily habits. Just walk and limit the use of your car. One of the poster images of pollution is our vehicles. It burns fuel. It is not as efficient as we hope it could be, and we use it every single day. To lessen the effects of the air pollution caused by our vehicles, we should limit their use. If we can walk to our destination then just let us go. Not only do we lessen our carbon dioxide emissions, but we also get a good exercise out of it. Use a laptop instead of a computer desktop. Laptops are more energy efficient compared to their bigger counterparts. A laptop is generally 50 percent more efficient in using electricity. Aside from that there are other benefits of a laptop. It is portable so you can work anywhere you like and that you get powerful features without the large size of desktop units. Turn off the faucet while you are brushing your teeth. It is always a better idea to use a glass when we are brushing our teeth and not to just let the faucet keep on running. Therefore,there is less water to waste while we are cleaning our pearly whites. Simply turn off the faucet when you are not using it. Make good use of natural light. We have a great and natural lamp --- the sun, and we should learn how to take full advantage of it during daytime. So instead of turning on our lights or lamps even if it is still not evening, we should pull up the drapes and let the natural light come in from the windows. These are just some of the best tips for green living, but of course there are still many of these tips if you just search for them. But you can do your own variation any time just always prioritize how you can use less energy and produce even lesser trash and pollution. Question: How many tips does the passage mention for green living today? - Three - Four - Five - Six
Four

Read the following article and select the best answer. Article: Nowadays, the younger generations are often complained about the selfishness and lack of respect by the older generations. It is undeniable that some young people do need to be educated on mutual respect and concern for others, especially senior members of society. But we older people should have some understanding about the young, too. Today's society is rather different from what it was when we were young. The social, financial and psychological pressure today's young people have to face is much higher than what we did back in the 1950s through the 1990s. They are in the early stage of their career. They have to find proper jobs to support themselves and work hard to rise. They have to live in smaller houses, because they are unable to afford the rising housing prices. Considering these facts, we may find it understandable why young people sometimes appear aloof and disrespectful. I don't mean that we should put up with it without reminding them of the need to mend their ways. What I mean is that we should be more patient, understanding and tolerant toward them. For instance, when we get up on a bus or a subway train, we should not complain about not being offered a seat. A young person does not offer a senior citizen his/her seat probably because he/she has to travel a long way to work or because the carriage is too crowded for one to move at all. In fact, young people do offer their seats to the seniors. I seldom take a bus or a subway train, but more than a quarter of the times I have done so, I was offered a seat. That is fair enough, considering that I do not look so old. But on occasions, I have seen old people not showing any sign of gratitude when offered a seat. China has become an aging society since the end of the last century. According to a recent survey, people older than 60 accounted for 11.4 percent of the nation's population. And the percentage is expected to rise because of the one-child family planning policy our country has practiced for more than three decades. In other... Question: The author's attitude towards young people not giving up seats to the old is _ . - unreasonable - unacceptable - understandable - unusual
understandable

(Q).
Read the following article and select the best answer. Article: Maybe you love them and want to pet every one you see.Or maybe you're afraid of them and want to move to a dogfree neighborhood.Either way,dogs are a part of life.Millions of people have dogs as pets.You'll see them all over town,in the city,country,and even when you're on vacation. Like many kinds of pets--no matter how small or cute they are--dogs need to be respected as animals that,under certain conditions,could hurt you.Nearly 5 million dog bites happen every year in the United States.No one wants a dog bite,but how do you prevent one? One dog expert has come up with an easy way for kids to remember some tips to prevent dog bites.It spells "DOG SAFE". Don't tease,please:Teasing a dog can make it angry enough to bite.For instance,if a dog has food or a toy,never try to take it away.You wouldn't like it if someone took your snack while you were eating it! Only pet with permission:Never pet a dog without asking the owner if it's OK.Some dogs don't like to be touched by strangers. Give space:Little kids especially might run right up to a lovely dog and try to pet it or give it a hug.But dogs need space.Crowding a dog can frighten or anger the dog. Slow down:Some dogs like to chase and bite.Of course,you don't want to be chased or bitten!The way to avoid it is to go slow around dogs.Never run toward them or away from them.If a dog you don't know runs toward you,freeze.If you need to get away,back up slowly. Always get help:You may want to bring home a dog that seems lost or injured.But animals who are lost or injured may be very frightened or in pain.Find a grownup instead who can decide how to care for the animal. Fingers together:When feeding a dog a treat,put the treat in the palm of your hand and keep your fingers and thumb close together.Why?The dog is less likely to get confused about which is the treat--the doggie snack or your finger! Even good dogs can bite:Some people are very surprised when their dog bites someone,but all dogs can bite.Avoid doing things that make dogs scared or angry,such as... Question: You won't make a dog angry if _ . - you let it alone while it is eating - you pretend to take its food away - you exchange toys with it - you play together with it
(A).
you let it alone while it is eating