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Once you find water, a major issue remains: Is it pure? Is it drinkable? And if not, how to make it drinkable?

You can make a water filler(过滤器)from a cone of birch bark(桦树皮). This cone is then filled with layers of sand, charcoal(木炭), grasses, and other materials. Grasses and sand help to trap suspended particles(悬浮颗粒). Charcoal helps to remove chemical impurities, but not bacteria. You may have to pass the water through the filter more than once, depending on the site of the filter and what it's made of. Generally speaking, the bigger the filler, and the more layers you have in it, the better.

The birch bark cone will need to have a fairy small hole in the bottom. The cone will have to be tied with cordage to keep it from opening up. Put a few stones in the very bottom, to help hold your filtering materials in place. Then pour in lavers of charcoal, grasses, sand, and possibly other materials that you feel will help to filter out suspended particles and perhaps even bacteria.

Once you have constructed the filter, simply pour impure water through the filer, catching it in another container at the bottom.

This is basically the "well" method of obtaining water. Dig a hole about 2 4 feet from a water source, such as a river. Allow the hole to fill with water. The water in the hole will likely be reasonably pure.

【小题1】How do we get purer water?
A.Bigger filter and less layers.B.Smaller filler and more layers.
C.Larger filter and more layers.D.Smaller filter and less lavers.
【小题2】Why should we put some stones in the very bottom?
A.Killing bacteria.B.Removing chemicals.
C.Blocking water.D.Keeping the materials balanced.
【小题3】What does a water filter look like?
A.B.C.D.
【小题4】The text is mainly intended to present a method of ___________.
A.absorbing waterB.cleaning waterC.finding waterD.boiling water
20-21高二上·江西·期中
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It’s school time again! You’re probably feeling excited and maybe a little sad that summer is over, Some kids feel nervous or a little scared (害怕的) on the first day of school because of all the new things. Luckily, these “new” worries only stick around for a short time. Let’s find out more about going to a new school.

Most teachers kick off the new school year by introducing themselves and talking about what you’ll be doing that year.

Most teachers let you pick your own seat on the first day, but by the second or third morning, they’ll have mapped out a seating plan. It’s a good idea to write down where your seat is in your notebook so you won’t forget.

Seeing friends you haven’t seen for some time can make the first day a good one. You can make the day feel special by wearing clothes that you really like. Maybe you got a great T-shirt on one of your vacations, or a pair of sneakers. It also can make you feel good to be prepared and have all the things you need, such as pencils, folders (文件夹), and whatever else you’ll need. But make sure that you pack them the night before in case you don’t have time in the morning.

【小题1】In the second paragraph, the underlined phrase “kick off” most probably means “________”.
A.jump overB.start
C.talk aboutD.finish
【小题2】Which of the following is TRUE according to the passage?
A.All students feel excited about a new term.
B.All teachers let students pick their seats.
C.New school worries do not last very long.
D.Being hard-working helps make new friends.
【小题3】What does the last paragraph mainly tell us about?
A.How to prepare for a new school.
B.What to know about a new school.
C.What to do on your first day of school.
D.How to make new friends.
【小题4】What’s the author’s purpose in writing this passage?
A.To offer students some advice on starting a new school.
B.To encourage students to work harder in a new school,
C.To remind children of the importance of staring school.
D.To introduce a way to improve students’ learning ability.

For many people, working from home part time or full time can be an attractive option. 【小题1】. You’ll have to plan out your strategy, work out all the little details, and then put in the work to make it happen.

Evaluate your talents.

Keep in mind that there is a huge difference between talents and things you enjoy. 【小题2】. Think about your skills that you do better than anyone else.

Assess your financing needs.

While starting a business from home can be more affordable than starting a traditional business, you will still need money to get started. 【小题3】. If you don’t have a lot in savings, you can get a business loan to get started, but this would mean afterwards being responsible for a loan.

Know your competition.

If you plan on working from home locally, look around town for other businesses offering the same services or products. You’ll have to find a way to stand out from the competition. Be sure to check around and analyze your competitors’ pricing. 【小题4】.

【小题5】.

If no business ideas are coming to mind, think about some of the tried home business types. Some common ideas include tutoring, tax preparation, accounting, web designing, dance instructing. These home based business ideas just require your personal skills.

A.Understand the needs of your market.
B.Consider some of the more common ideas.
C.Most of these business ideas can also be done online.
D.Think about how much money you need to cover all the initial costs.
E.Just because you enjoy something does not mean you can turn it into a business.
F.However, like starting any other business, it requires planning and personal devotion.
G.If you can offer the same product for less, you may be able to draw some of their customers away.

It’s never easy to say no, especially when we’re invited somewhere by someone close to us. 【小题1】 Maybe it’s time to learn how to tur down an invitation without hurting people’s feelings.

Delay your response. Avoid responding immediately to a request you believe you will turn down. A quick “No” will rob (剥夺) you of time to come up with a kind refusal. A simple “Let me check my calendar and get back to you” will often work. 【小题2】

Check your calendar for conflicts. If you are lucky, you will have a scheduling conflict. You can honestly decline due to the conflict. If the person insists on inviting you, they may ask you for a better time. 【小题3】 When you see your calendar is busy, take a little extra time in advance to think about a kind refusal if they ask for a better time.

【小题4】 If you know you want to decline before checking your calendar, you may have a reason in mind. Do you dislike the task? Are you planning to go to that event with someone else? Think about reasons you can give that focus on aspects of the request, instead of the aspects of the person requesting it.

Remember to respond. 【小题5】 If you do not respond, they may think you feel they are not important. So do remember to reply to requests. Emphasize non-personal reasons for declining.

A.Avoid admitting your schedule is open.
B.Identify exactly why you want to decline.
C.So be prepared to respond with a more direct refusal.
D.This gives you time to create a response in your head.
E.But you often find yourself saying yes and regretting it later on.
F.Keep these in mind if the other party asks why you are declining.
G.Forgetting about a request may hurt people or make you an impolite person.

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