During summer days, warmer temperatures bring...

During summer days, warmer temperatures bring pests like mosquitoes. Mosquitoes can cause lots of trouble for people.1.. They even can spread many serious diseases.

An easy way to protect yourself against mosquitoes is using repellents (驱虫剂). Joseph Conlon, an advisor of the American Mosquito Control Association, recommends using repellents that are registered with the Environmental Protection Agency, which ensures that they actually do no harm to humans. 2.. But some repellents can provide 4-6 hours of protection if the quality of them is excellent.

Mosquitoes are also very weak. A slight wind from a fan can help keep them away from you. It turns out that many mosquitoes are not very good fliers. 3..

Another way is to clear all the standing water (积水) every five days. Conlon explains that mosquitoes can produce young in water collected in areas as small as bottle caps. But they have a limited flight range, which means they can’t travel far. “The best way to avoid them is to not have them around in the first place.” he says. If you’ve got them in your backyard, it’s because you’re raising them in your backyard. 4.. “If you can’t avoid the standing water around your house, I suggest raising fish that will eat mosquito larvae (幼虫).”

5.. They’ve experimented with male mosquitoes containing some materials that stop females from producing larvae. “There are not a lot of companies producing new chemicals or treatments that we can use,” a researcher of the experiment adds. “We need new technologies and products to get rid of mosquitoes.”

A.They usually provide two hours of protection.

B.Do remember to keep children away from them.

C.So try to make sure your house doesn’t have standing water.

D.You can wear protective clothing and keep your windows closed.

E.You can set up a fan in your house so that mosquitoes can’t bite you.

F.Many people hardly sleep well at night with mosquitoes flying around.

G.The researchers also try to find high-tech solutions to mosquito population.

高一英语七选五中等难度题查看答案及解析

For the first time, a causal link has been established between climate(气候) change and the timing of a natural event-the appearance of the common brown butterfly.

Although there have been strong connections between global warming and changes in the timing of events such as animal migration and flowering, it has been hard to show a cause-and-effect link. This is what Michael Kearney and Natalie Briscoe of the University of Melbourne, Australia, have now done.

The researchers compared temperature changes in Melbourne-where the butterfly is common-with recorded observations of the first brown butterfly to be seen in the spring since the 1940s.With each of the past ten years, the butterflies appeared 1.6 days earlier and Melbourne heated by 0.14℃. Overall, the butterfly now appears on average 10.4 days before it did in the 1940s.

The pair are confident in the relationship for two reasons. First, they placed eggs of the butterfly, in special boxes where temperature could be controlled and found that each larval stage had a different response to warmer-than-normal conditions. The egg, which is laid in late summer, and the first larval stage do well at high temperatures, says Kearney. The second to the fifth stages occur in winter and can't survive high temperatures. The knock- on effect is that the larval pupates earlier and the butterfly appears sooner. Second, they made a mathematical model combining these physiological effects of temperature on development with climate data. The model precisely matched the observed changes in butterfly emergence date.

The researchers used several climate models to find out what is likely to have caused the rise in Melbourne's temperature, and ruled out the possibility that natural weather events could account for the warming.

1.What is the relationship between the rise in temperature and the butterfly appearance?

A.They are linked in a difficult way.

B.They are related in a cause-and-effect way.

C.They have a direct relationship with each other.

D.They have no connection with each other.

2.Why were the researchers confident about their finding?

A.They had used the most advanced equipment in the world.

B.Their finding got support from the textbooks.

C.The results of their study is based on expert judgement.

D.Their experiment proved their previous guessing.

3.What does the underlined part "The knock-on effect" in paragraph 4 mean?

A.The effect caused by the thing that happened before.

B.The effect of things that happened at the same time.

C.The effect of one thing causing the other long after.

D.The effect of one thing causing the other quickly.

4.What can be inferred from the text?

A.The exact reason for Melbourne's temperature rise is very clear.

B.Climate models cannot exactly show climate change in history.

C.The timing of the butterfly appearance will be earlier with increased warming.

D.The rise in temperature decides the possibility of natural weather events.

高一英语阅读选择中等难度题查看答案及解析

One day, during the long summer holiday, Mrs. Martins took Brendon and his younger brother Kim to the beach. As soon as they got there, the two children _______ down to the sea to try out their new surfboards（冲浪板）. They were soon swimming out to the _____ and riding back on their boards.

After a while, Brendon noticed that Kim was ____ away from him.

“Come back, Kim,” he shouted. “Mum said we have to stick together.” Kim put his arms over the side of his board and began paddling (划水) , but _____ getting closer, he began moving further away.

“Brendon, help!” called the young boy. “I’m ____ in a rip current (离岸流).” Brendon quickly paddled over to his _____.

“____ the back of my board and I’ll pull you to the beach,” he told the ____ boy. But the rip was too ______ and soon both Brendon and Kim were moving further from the beach.

“I can’t ____ see our beach any more,” cried Kim.

“Yes, but we’re not moving out of the sea any more. We’re just floating along the coast. See, there’s the next beach.” said Brendon ____. “We’re moving closer to it.” Sure enough, the current was now taking them closer to the beach and becoming_____.

“Right, it’s time to paddle,” said Brendon, suddenly full of ____.

Before long the children paddled to the beach _____ they sat for a few moments to _______ their breath. After a while, they_____ up their boards and started the long walk back to their mother. When they got there, they were _______ to find the beach full of people and boats.

“Thank goodness!” cried their mother running to _________ them. “We were just about to start a search. One minute you were in the waves in front of me and the next you were gone. I was so_____.”

“It’s OK,” said Brendon, hugging his mother. “We did just as you told us and ______ together.”

1.A. rushed　　 B. got　　 C. came　　 D. jumped

2.A. beaches　　 B. waves　　 C. fields　　 D. sands

3.A. turning　　 B. breaking　　 C. floating　　 D. pulling

4.A. because of　　 B. in addition to　　 C. in case of　　 D. instead of

5.A. found　　 B. caught　　 C. stricken　　 D. rested

6.A. mother　　 B. sister　　 C. friend　　 D. brother

7.A. Hold onto　　 B. Put down　　 C. Hold up　　 D. Take off

8.A. determined　　 B. frightened　　 C. concerned　　 D. excited

9.A. hard　　 B. deep　　 C. strong　　 D. soft

10.A. still　　 B. already　　 C. hardly　　 D. even

11.A. carefully　　 B. sadly　　 C. cheerfully　　 D. eagerly

12.A. weaker　　 B. clearer　　 C. lower　　 D. faster

13.A. spirit　　 B. energy　　 C. power　　 D. force

14.A. how　　 B. why　　 C. where　　 D. when

15.A. save　　 B. feel　　 C. hold　　 D. catch

16.A. picked　　 B. mixed　　 C. rolled　　 D. fixed

17.A. angry　　 B. anxious　　 C. hurried　　 D. surprised

18.A. punish　　 B. beat　　 C. hug　　 D. praise

19.A. disappointed　　 B. worried　　 C. embarrassed　　 D. amazed

20.A. stuck　　 B. shouted　　 C. shook　　 D. swam

高一英语完形填空中等难度题查看答案及解析

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。

Many kids go to day camps during summer. Day camps can be a lot of fun, but the activities are familiar.1.It might take you a little while to get familiar with the place. But you come home every night, just like you do during the school year.Sleep away camp offers more excitement because you’ll be there all day and night. It’s a kind of vacation, but without your parents. You’ll probably sleep in a tent（帐篷） with other kids attending the camp. Your parents should not worry about your food.2.Some sleep away camps are for both boys and girls, which means that there are both boys and girls at the camp.3.Often these all-girl and all-boy camps meet up for some special purposes.Usually, the camp mails out information to your family before you go.4.Most of all, you’ll also probably need to bring a health report. Let coaches know about any health problem you have. Just like any vacation, you’ll need to pack a bag full of the clothes.5.Food is generally provided, but you might need some extra money for snacks or other small expenses(费用).

高一英语七选五中等难度题查看答案及解析

Warmer temperatures are the new normal

Hotter weather appears to be here to stay,El Nino or not.That's according to the U.N. weather agency.It warned that the Paris climate accord（协定）last year shouldn't give way to complacency（自满）about global warming.

The World Meteorological Organization issued（公布）its annual climate report following a record-hot 2015.It drew people's attention to records already announced by different countries' weather agencies.The agency pointed out that 2015 was breaking records on the surface.It also broke records hundreds of meters deep in the ocean.

And the first two months of 2016 were even hotter.These months are so unusual that they "have sent shockwaves around the climate science community."That's according to David Carlson of the World Climate Research Program.

Climate scientists blame record high temperatures last year and this year so far on a combination of a super-sized El Nino.It is a natural warming of pans of the Pacific that changes weather worldwide.Another factor is a long-term global warming trend from the burning of fossil fuels（化石燃料）.

NASA said last month was 1.35 degrees Celsius (2.43 degrees Fahrenheit) warmer than average.Of that,0.8 degrees (1.44 degrees Fahrenheit) comes from the long-term warming.And 0.25 degrees (0.45 degrees Fahrenheit) comes from El Nino.The rest is from unexplained results.This was calculated by climate scientist Stefan Rahmstorf of the Potsdam Institute in Germany and the University of New South Wales.

Even after the El Nino phenomenon becomes less strong in coming months,way above normal temperatures won't exactly go away,Carlson and others said.

"We're on a slope; sometimes the slope goes very steep,sometimes it's a little bit more shallow,but we're going upward,"Carlson said in a news conference."So the normal is going to be increases: It's going to be increased temperature,increased ocean heat content,loss of ice,we know all of these things."

Katharine Hayhoe is a Texas Tech climate scientist who wasn't part of the WMO team.But she agreed:"These records vividly show the destructive power of an El Nino on climate changes."

The WMO predicts warmer weather accompanied by pockets of both drier and wetter conditions,depending on the region,around the world.

WMO Secretary-General Petteri Taalas told reporters in Geneva that many people believe the climate issue is "solved...since we reached a nice agreement in Paris."But,he said,"We haven't changed our behavior yet."

1.The author wrote Paragraph 1 to_______.

A. introduce something about El Nino

B. explain the causes of hotter weather

C. warn the world of global warming

D. introduce the main topic of the passage

2.Which of the following statements is true?

A. The Paris climate accord last year has made a big difference to global warming.

B. The high temperature only increases on the surface of the earth.

C. The records of high temperature in the first two months of 2016 made climate scientists shocked and worried.

D. the high temperature was mainly caused by El Nino.

3.It can be inferred that ________.

A. the high temperature will result in natural disasters around the world according to WMO

B. The problem of high temperature will be solved with the disappearance of El Nino

C. Scientists have different opinions on the causes of high temperature of the earth

D. Since we reached a nice agreement in Paris,we needn't worry about the increase of temperature

4.How does the passage mainly develop?

A. By making comparisons.

B. By analyzing the results and causes.

C. By providing examples.

D. By following the order of time.

高一英语阅读理解困难题查看答案及解析

Where Do Mosquitoes(蚊子)Go in Winter?

Why do mosquitoes ,everywhere in warmer months,disappear completely in winter?1.Mosquitoes are cold-blooded insects, meaning that they don’t like the cold and prefer temperatures that are 80 degrees .Fahrenheit or more. When the temperature drops, they actually lose their ability to fly and become motionless.

2.They would never be able to fly far enough. The actual answer to the question is different for male and female mosquitoes. Male mosquitoes? They die. But that’s not just because of the cold. Male mosquitoes have far shorter lifespans(寿命) than females, and they die in autumn.

Female mosquitoes, though, can live through the winter. They hibernate (冬眠). In autumn, the females will go into hollow logs or cracks in the ground and enter this still state.3.They put off their development, typically for months.

When it warms up again, the females will come out from hibernation. At this point, they’re getting ready to lay their eggs and they need as much blood as possible to help the eggs develop. The females must find a blood meal to provide the protein(蛋白质) needed by their eggs to develop, just in the time, when humans are outdoors in short sleeves enjoying the warming weather.4.

It actually doesn’t have to be what we humans would consider “cold” to put a mosquito in danger. While these pests live actively when it’s around 80 degrees F, most species can start heading into hibernation when it drops to around 50.5.This is when female mosquitoes start looking for a place for sleep.

A.The obvious answer is that it’s cold.

B.Now it’s time for male mosquitoes to wake up.

C.It’s only the female mosquitoes that are biting you.

D.Unlike birds,mosquitoes don’t fly south for the winter.

E.Anything below 50 degrees is already too cold for most mosquitoes.

F.They carry on with life only when there is enough water for their needs.

G.They can hibernate for up to six months in freezing or waterless conditions.

高一英语七选五中等难度题查看答案及解析

As you're busy with your studies, the weeks during the Spring Festival can be a time when training and healthy eating plans go out of the window. But you can continue running and avoid weight gain during the holiday season. 1.

Pick a race

Having a race on your calendar (日历) is a motivation（动机） to keep running during the holiday. 2. Check our active.com or Running in the City for events near you.

Don't skip breakfast

If you're going to a holiday party in the evening, don't make the mistake of skipping breakfast.You may think you're saving calories for later. 3.

Bring your own healthy dishes

Chances are that most of the dishes at holiday gatherings are going to be high in taste and calories. Bring your own healthy appetizers(开胃菜) to the party. The host will appreciate it, and you know there will be at least one wise choice on the buffet table.

4.

If you're heading to an evening event, eat regular(规律的) meals and snacks every few hours up until party time. You won't arrive at the party ready to attack appetizers. Make sure you include fiber at each meal because it keeps you full longer.

Plan your runs

It's easy to say that you'll keep running regularly during the holiday season, but sticking to it requires a strategy. Schedule your runs like appointments, so you make them the first thing during a busy week. 5.

A.Treat yourself

B.Eat small meals

C.Try some or all of these strategies (策略)

D.In fact, it may lead to overeating later in the day

E.Buy yourself a gift of some new running shoes and clothes

F.Once you choose one that is in a few weeks, set a plan and stick to(坚持) it

G.If you have runs scheduled, you are more likely to get them done

高一英语七选五中等难度题查看答案及解析

A few summers ago my daughter and I were swimming in our pool. This day had been like most others, _______I had no way of knowing that this one would _______in our family history as a memory we _______and still talk about from time to time.

The sun was setting and the night was _______approaching. For the shallow end of our pool, my daughter _______it first. Right about eye level, a spider was spinning her _______by the pool. It _______me that my daughter noticed this, and it surprised me even _______that she wasn’t afraid of the spider.

Instead, she delightfully _______as the spider busied herself in the cycle of life. As we both gazed at this __________of nature, a very simple thought __________me. I had lost track of time. I honestly didn’t know __________we had been just standing there and staring at that spider __________her web. But, regardless of what ever amount of time had passed, the __________was that we were simply having fun. We were having fun __________really doing anything really BIG or special. I thought. However, in contrast, I believe that by sharing this __________of the spider building her web we were __________just as fulfilled as if we had done something very important.

Remember that the __________things are the best things in life. Spend time together appreciating the simple things in __________, and even more importantly, __________time together talking about life. Do this and you’ll have special moments and special memories that will last a life time.

1.A.or B.and C.but D.so

2.A.go down B.get up C.take off D.lead to

3.A.deserve B.remind C.treasure D.exhibit

4.A.eventually B.frequently C.carefully D.quickly

5.A.invented B.noticed C.informed D.ruined

6.A.cloth B.craft C.pot D.web

7.A.surprised B.interested C.frightened D.excited

8.A.farther B.more C.longer D.better

9.A.noted B.watched C.followed D.changed

10.A.sight B.signal C.wonder D.advertisement

11.A.caught B.occurred C.knocked D.hit

12.A.how soon B.how often C.how long D.how far

13.A.removing B.building C.painting D.sending

14.A.truth B.message C.advice D.information

15.A.for B.without C.by D.in

16.A.ability B.knowledge C.happiness D.experience

17.A.all B.both C.either D.neither

18.A.simple B.expensive C.bright D.flexible

19.A.office B.earth C.life D.hope

20.A.kill B.waste C.cost D.spend

高一英语完形填空困难题查看答案及解析

The Smiths don’t usually like staying at ______ hotels, but last summer they spent a few days at a very nice hotel by _____ sea.

A. /; a　　　　 B. / ; the

C. the ; the　 D. the ; a

高一英语单项填空中等难度题查看答案及解析

Can a bowl of chicken soup help fight a cold? Maybe. But will going outside with wet hair make you sick? No. 1. Here are some more.

Feed a cold, starve a fever. Being sick often makes you eat less. But force-feeding won't help. What will help is drinking more water and getting enough calories. A 2008 study found that mice having flu took longer to recover and were more likely to suffer ill effects if they were dieting. 2.

Vicks VapoRub(薄荷膏) in your socks treats coughs. A widely spread post on line once suggested putting Vicks VapoRub on feet at night and covering them with socks to treat coughs. 3.VapoRub is usually used on a child's chest or throat to reduce cough. So it would not work in your socks. Still, some fans stand by this treatment.

4. Colds and flu are caused by viruses. They do spread during cold-weather seasons, but you're more likely to pick them up inside than out. In fact, going outside and getting more physical activities-and not just during cold and flu season-may help prevent sickness.

A wet head can make you sick. You'll probably feel cold if you don't blow your hair dry on a cold day, but not much else will happen. 5. Unless you are so cold that you get a low temperature, which could make you sensitive to flu, wet hair or clothes won't increase your possibility of catching a cold.

A.It became an internet popularity.

B.You'll get sick if going out without a coat.

C.Again, colds are caused by a virus.

D.That's just an incorrect traditional belief in cold.

E.But you have to actually wear it for the health benefits.

F.Experts suggest adding medicines three times a day to your meal.

G.The researchers' suggestion is to stop dieting until after flu season.

高一英语七选五中等难度题查看答案及解析