【推荐1】While there are plenty of factors that go into how attractive you are to mosquitoes, new research has found the colors you’re wearing definitely play a role.

For the study, researchers from the University of Washington tracked the behavior of female Aedes aegypti mosquitoes when they were given different types of visual and scent cues (气味信号). The researchers put the mosquitoes into small test rooms and exposed them to different things, like a colored dot (小圆点) or person’s hand.

The mosquitoes first detect that you’re around by smelling carbon dioxide from your breath, which pushes them to look for certain colors and visual patterns that could indicate food, the researchers explained. When there was no scent cue like carbon dioxide in the test rooms, the mosquitoes neglected the colored dot, no matter what color it was. But once researchers sprayed carbon dioxide in the room, they flew toward dots that were red, orange, or black. Dots that were green, blue, or purple were overlooked.

“Light colors are perceived as a threat to mosquitoes, which is why many species avoid biting in direct sunlight,” researcher Timothy Best says. “Mosquitoes are very likely to be affected by dehydration (脱水) which can even cause them to die, therefore light colors may represent danger and cause avoidance. In contrast, darker colors may copy shadows, which are more likely to absorb and preserve heat, allowing mosquitoes to locate a host.”

If you have the option of wearing lighter or darker clothes when you know you’ll be going into an area with lots of mosquitoes, you’d better go with the lighter choice. Dark colors stand out to mosquitoes, whereas light colors blend in. When you’re going into areas where these small insects are known to hide, you can use bug spray and wear long-sleeved shirts and trousers. Regularly get rid of standing water around your home and empty items that hold water such as bird baths, toys, and planters. Each of these protective measures will contribute to decreasing your likelihood of getting bitten. And, if you’re able to wear something other than red or dark colors, even better.

1. What is paragraph 2 mainly about?

A．The result of the experiment.	B．The process of the experiment.
C．The purpose of the experiment.	D．The significance of the experiment.

2. What does the underlined word “neglected” in paragraph 3 probably mean?

A．Adored.

B．Located.

C．Ignored.

D．Approached.

3. Which place may be more attractive to mosquitoes according to Timothy Best?

A．A dry and clean yard.	B．A classroom painted in white.
C．A kitchen with delicious food.	D．A bathroom with dark walls.

4. What does the author intend to tell us in the last paragraph?

A．How to protect plants.	B．How to keep the room tidy.
C．How to avoid mosquito bites.	D．How to choose summer clothes.

【推荐2】Earthquakes can strike without warning. But many injuries and deaths from this kind of natural disaster can be prevented if people follow these safety tips.

If you’re inside a building, stay there! One of the most dangerous things to do in an earthquake is to try to leave a building.     1     Drop to the ground. Get under an object that is not easily damaged. Hold on to it until the shaking stops. You can also get to a corner formed by two walls with your arms over your head. If you’re in bed when the quake hits, stay there and protect your head with a pillow.

    2     Don’t take shelter under a tree, streetlights, electric poles or tall buildings. If you are driving, stop as quickly as possible and stay away from overpasses (立交桥), buildings, bridges or anything else that might fall or collapse beneath you.     3    

If you are trapped in ruins, cover your mouth with a handkerchief or a piece of clothing. Use your cell phone to call for help if possible. Don’t shout. Shouting can cause you to breathe in dust.     4    

Be prepared for aftershocks.     5     However, sometimes they even happen months later. Therefore, if you are not in a safe position (位置) after the first shock, you should move quickly but carefully to a safer place.

A．If you’re outside, go to an open space.

B．Don’t get into a panic and stay calm.

C．Don’t park your car under a tree or any tall object.

D．Tap on a pipe or the wall so rescuers can find you.

E．Most injuries happen when people inside buildings try to go out.

F．They can happen in the first hours after the earthquake.

G．Take a good hold of your cell phone in the building.

【推荐1】Girls can easily get sad. If your friend is feeling blue and calls you, what will you do? Here are some tips on how you can make her smile again.

Listen to her. When people feel sad, they often have the feeling of needing to be heard. So, listen carefully to what she is saying and do nothing else. Your friend will surely thank you for being the shoulder she can cry on.

Once you are done with listening, you can offer some advice or remain silent and let her feel everything and let it all out by crying. As a friend, you might think you should give her some advice. But if you have no idea about what to say, just remain silent and be there for her.

In order to be able to help your friend in need, don't be sad yourself. How can you help your friend when you are also feeling down.

A hug can make a difference in the world. It makes you feel warm and special. A hug makes you feel safe. So give your friend a hug when she needs it the most.

Spend more time with your friend who wants to be happy. Do things together like washing dishes, cleaning, or going out for fun. The more time you spend together, the stronger your friendship will become.

Sometimes, it is much better that you avoid a crying friend in your life. But by doing so, you are also keeping your friend at a distance and will make her wonder if you are her true friend. If you are there when she needs you, your friendship will be much stronger.

1. The writer wrote this passage mainly to tell us ________.

A．why girls can easily get sad	B．what to do when we are sad
C．how to make new friends with girls	D．how to make a sad female friend happy

2. When a female friend is sad, what should we do?

A．We should ask her why she feels sad.

B．We should say something nice to her.

C．We should spend time listening to her.

D．We should give her some good advice.

3. We can learn from the passage that ________.

A．hugging a sad friend can make you feel warm

B．your sad friend may feel much better if you are sad

C．it's not a good idea to be silent facing a sad friend

D．giving a hug to a sad friend is very helpful

4. In Paragraph 6, what suggestions does the writer offer?

A．We should spend more time with our friends.

B．We should help our friends with their housework.

C．We ought to spend time with our friends every day.

D．We ought to ask our friends to take part in activities.

【推荐2】Many teenagers(青少年) feel that important people in their lives are their friends. They believe that their family members, especially their parents, don't know them as well as their friends do. In large families, it is often for brothers and sisters to fight with each other and then they can only go to their friends for advice.
It is very important for teenagers to have one good friend or many friends. Even when they are not with their friends, they usually spend a lot of time talking among themselves on the phone. This communication is very important in children's growing up, because friends can discuss something difficult to say to their family members.
However, parents often try to choose their children's friends for them. _____________________________________ The question of “choice” is an interesting one. Have you ever thought of the following questions?
Who chooses your friends?
Do you choose your friends or your friends choose you?
Have you got a good friend your parents don't like?
1. Why do many teenagers think their friends are the most important?

A．They often fight with their brothers and sisters.

B．They can't get help from their parents.

C．They believe their friends understand them better.

D．They are often the only child of their family.

2. When teenagers stay alone, the usual way of communication is to ______.

A．go to their friends

B．talk with their parents

C．have a discussion with their family

D．talk with their friends on the phone

3. The underlined sentence in Paragraph 3 is different from ______ in meaning.

A．Some parents may even not allow their children to meet their good friends.

B．Some parents may even ask their children to stay away from their good friends.

C．Some parents may even not let their children meet their good friends.

D．Some parents may want their children to stop to meet their good friends.

4. Which of the following sentences is true?

A．Parents should like everything their children enjoy.

B．In all families, children can choose everything they like.

C．Parents should try their best to understand their children better.

D．Teenagers can only go to their friends for help.

5. The main idea of this passage is that “______”.

A．Teenagers need friends.

B．Friends can give good advice.

C．Parents often choose their children’s friends for them.

D．Good friends can communicate with each other.