以下四人正在寻找一些网站，阅读以下五段不同网站的介绍（A、B、C、D、和E），对应选出正确答案,并在答题纸上将该选项标号涂黑。A、B、C、D、和E选项中有一项是多余选项。

1. Jasper enjoys listening to music. He is expecting to find a website where he could search for various songs with similar tunes that he prefers.

2. Luke is planning to buy a car. But right now he has not made up his mind. He prefers Mazda RX-8. He wants to find more information about this car to make sure that it is a good choice.

3. This Sunday is Valentine’s Day. Roderick is still deciding what kind of presents he should buy for his girlfriend. He prefers to have something traditional, like chocolate.

4. Fiona is retired. She begins to pay attention to her health. What interests her most now is how to remain healthy and young. She always surfs on the internet for such information.

A. Naturespath.com is an excellent health-food website. “Life enhancement expert” Allan Hunkin interviews such guests as nutrition expert Dr. David Katz and tri-athlete Melanie McQuaid. They talk up health food and weight management, including debates on the benefits of whole grain and organics.

B. Autoblog.com tops the category by covering “auto industry news from A to Z.” They discuss hundreds of car models and links to outside articles for more information. While the site provides no reliability reviews, its “royal and growing fan base” comments frequently on the entires.

C. Mrchocolate.com—The Consumer Reports “best buy” for “unusual” chocolates for the one you love. Jason’s choice is 50 pieces of small dark, milk, and white chocolate with offbeat (标新立异的) centers, including coffee, nut butter, and tropical fruit.

D. Carpet-rug.org— The Carpet and Rug Institute awards a “Green Label” to vacuums (真空吸尘器) that release fewer than 100 micrograms of dust particles per cubic meter of air. Find a list at this site.

E. Pandora.com takes one of your favorite tunes, then suggests songs that you might enjoy. Pandora offers 10 hours of free use, then charges $ 36 a year.

以下四人正在寻找一些网站，阅读以下五段不同网站的介绍（A、B、C、D、和E），对应选出正确答案,并在答题纸上将该选项标号涂黑。A、B、C、D、和E选项中有一项是多余选项。
1. Jasper enjoys listening to music. He is expecting to find a website where he could search for various songs with similar tunes that he prefers.
2. Luke is planning to buy a car. But right now he has not made up his mind. He prefers Mazda RX-8. He wants to find more information about this car to make sure that it is a good choice.
3. This Sunday is Valentine’s Day. Roderick is still deciding what kind of presents he should buy for his girlfriend. He prefers to have something traditional, like chocolate.
4. Fiona is retired. She begins to pay attention to her health. What interests her most now is how to remain healthy and young. She always surfs on the internet for such information.
A. Naturespath.com is an excellent health-food website. “Life enhancement expert” Allan Hunkin interviews such guests as nutrition expert Dr. David Katz and tri-athlete Melanie McQuaid. They talk up health food and weight management, including debates on the benefits of whole grain and organics.
B. Autoblog.com tops the category by covering “auto industry news from A to Z.” They discuss hundreds of car models and links to outside articles for more information. While the site provides no reliability reviews, its “royal and growing fan base” comments frequently on the entires.
C. Mrchocolate.com—The Consumer Reports “best buy” for “unusual” chocolates for the one you love. Jason’s choice is 50 pieces of small dark, milk, and white chocolate with offbeat (标新立异的) centers, including coffee, nut butter, and tropical fruit.
D. Carpet-rug.org— The Carpet and Rug Institute awards a “Green Label” to vacuums (真空吸尘器) that release fewer than 100 micrograms of dust particles per cubic meter of air. Find a list at this site.
E. Pandora.com takes one of your favorite tunes, then suggests songs that you might enjoy. Pandora offers 10 hours of free use, then charges $ 36 a year.

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

There's an old saying, “You can put more salt in the soup，but once it's in there，you can't get it out.”__1__ And your child can help！Here's an exciting experiment for your child to try：

Start by helping your child to mix salt into the water in the mixing bowl and stirring until it is fully dissolved溶解）．

___2__ Make sure that you don't let any of the salty water into it.

___3__ Then take a small rock，and place it right on top of the center of the plastic wrap，so that all of the plastic leans slightly toward the middle of the bowl where the cup is.

Put the whole setup in full，hot sun，and wait. Within an hour, you should see water droplets begin to form on the underside of the plastic. __4___

Wait, and then take the plastic off. A good amount of water should be in the small cup.

__5__ Guess what? No salt！The water vaporized蒸发）in the heat of the sun，and then returned to its liquid state. Salt doesn't do that一it stayed behind. You really can take the salt out of salt water！

As it happens，this is an excellent lesson in the way matter can change states.

A．Fresh water is scarcer than ever.

B．Invite your child to taste with you.

C．Water can go from liquid to gas and to liquid again.

D．Cover the bowl with plastic wrap and seal the edges.

E．Then place a cup or a smaller bowl into the center of the bowl.

F．They'll flow and drip into the center of the bowl，and into the cup.

G.．Today, scientists are busy exploring ways to take the salt out of salt water in large quantities.

下面文章中有5处需要添加小标题。请从以下选项（A、B、C、D、E和F）中选出符合各段意思的小标题。选项中有一项是多余选项。

A. Kripke’s Research Tool

B. Dangers of Habitual Shortages of Sleep

C. Classification of Sleep Problems

D. A Way of Overcoming Insomnia

E. Sleep Problems of Long and Short Sleepers

F. Oversleeping — Too Much of a Good Thing

1. ______

Although the dangers of too little sleep are widely known, new research suggests that people who sleep too much may also suffer the consequences.

2. ______

Investigators at the University of California in San Diego found that people who clock up 9 or 10 hours each weeknight appear to have more trouble falling and staying asleep, as well as a number of other sleep problems, than people who sleep 8 hours a night. People who slept only 7 hours each night also said they had more trouble falling asleep and feeling refreshed after a night’s sleep than 8-hour sleepers.

3. ______

Previous studies have shown the potential dangers of chronic(慢性的) shortages of sleep — for instance, one report demonstrated that people who habitually sleep less than 7 hours each night have a higher risk of dying within a fixed period than people who sleep more.

4. ______

For the current report, Kripke reviewed the responses of 1,004 adults to sleep questionnaires, in which participants indicated how mush they slept during the week and whether they experienced any sleep problems. Sleep problems included waking in the middle of the night, arising early in the morning and being unable to fall back to sleep, and having tiredness interfere with day-to-day functioning.

5. ______

Kripke found that people who slept between 9 and 10 hours each night were more likely to report experiencing each sleep problem than people who slept 8 hours. In an interview, Kripke noted that long sleepers may struggle to get rest at night simply because they spend too much time in bed. As evidence, he added that one way to help insomnia is to spend less time in bed. “It stands to reason that if a person spends too long a time in bed, then they’ll spend a higher percentage of time awake,” he said.

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

Two brightly colored butterflies have just flown by. They seems to be exactly alike, but actually one is a little larger than the other.   1  The smaller one has a wingspread of less than three inches and also a black line on its back wings.

At first sight, it is hard to tell them apart. Would you guess from this that they are different-sized butterflies of the same species?  2  If you said yes to either question, you would be wrong, for these look-alikes belong to quite different families.

The larger insect is the monarch butterfly (黑脉金斑蝶). As a baby insect, the monarch feeds on milkweed, which seems to give the monarch a disagreeable taste and smell.   3  Birds that eat butterflies soon recognize the monarch and quickly learn to leave it alone.

  4  Birds would find this insect tasty, but because it looks like the monarch, birds keep away from it. The viceroy’s similarity to the monarch gives it some protection from its enemies and helps it survive.

There are other pairs of look-alike butterflies, bees and moths. In each case, one either has a disagreeable taste or smell, or can give a painful sting (叮咬). The larger is called the model.  5  

A．The smaller insect is the viceroy (副王峡蝶), which feeds on the leaves of trees.

B．The larger insect has a wingspread (翼长) of up to four inches.

C．The bright coloring of the monarch acts as a warning sign to its enemy.

D．Birds protect their babies from eating such dangerous enemies.

E. The insect that imitates this model for protection is called the mimic（保护色）.

F. Or that they are different species of butterflies but close relatives belonging to the same family?

G. Do you like this kind of special species?