1 . A cheap printed sensor(传感器) could transmit wildfire warnings. Wildfires have recently destroyed the forests across the world, and their gravity is increasing. Hoping to reduce harm, researchers led by Yapei Wang, a Chinese chemist of Renmin University, say they have developed an inexpensive sensor to detect(监测) such fires earlier with less effort.

Current detection methods rely heavily on human watchfulness, which can delay an effective response. Most wildfires are reported by the general public, and other alarms come from routine foot patrols and watchtower observers. Passing planes and satellites also occasionally spot something, but "the fire first appears on the ground," Wang says. "When you see the fire from the sky, it is too late."

The team says its new sensor can be placed near tree trunks' bases and send a wireless signal to a nearby receiver if there is a quick temperature increase. That heat also powers the sensor itself, without replacing batteries. The team printed the substances onto ordinary paper to create a sensor for just $ 0.40.

But improving coordination among the different companies involved in firefighting is even more important to deal with, says Graham Kent, an earthquake expert at the University of Nevada, Reno, who was not part of the study. Kent is director of ALERT Wildfire, a network that uses cameras and crowd sourcing to watch for fires in California, Nevada and Oregon. "The whole way that you respond to a fire until it's put out is like a ballet," he says. "You'd have to choreograph(设计)it just so, with resources accurately used at the right time and place and in the right order from detection to confirmation to assignment to extinguishment(熄灭). Fire detection is just step one."

Wang says his team's next steps are to extend the device's signal range beyond the current 100 meters, which can limit practical use, and to develop a protective shield（防护罩） for it. The transmitter's effectiveness, he notes, will also need to be examined in the field ahead.

1. What does the underlined word "gravity" in paragraph 1 probably mean?

A．Pull.

B．Extinction.

C．Popularity.

D．Seriousness.

2. What do we know about the sensor?

A．Its price remains high.	B．Its batteries are replaceable.
C．It can detect fires earlier and easier.	D．It can reduce firefighters' pain.

3. What does Kent mean in paragraph 4?

A．Firefighting is easy but crucial.	B．Fire detection resources are rich.
C．Putting out a fire is an orderly activity.	D．Technology is the key to extinguishing a fire.

4. What's the plan for the new sensor according to Wang?

A．Improving and testing it.	B．Limiting its use and transmission.
C．Examing and reducing its signal range.	D．Getting it on the market ahead of time.

3 . 假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：1. 每处错误及其修改均仅限一词；
2. 只允许修改10处，多者（从第11处起）不计分。

About a year before, I pulled into CC Mall do some shopping. I found a shopping cart what was in the parking space next to my car, and saw a purse in it. I didn’t know who it was belonged to. I opened the purse and went through the cards with no lucky of finding something but a woman’s name, and then I found the address on the top of her check. With the help of MapQuest on my mobile phone, I got the directions to her house. I drove 15 miles to this lady’s house and knock at the door. No one was home at that time, so I left a note with my phone number on it, letting her know that I had her purse. She eventually called me and we arranged the appointment. While I got to her house, she offered me dinner and all the money in her purse, but I mustn’t accept it. I told her that it was the right thing to do.

4 . 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

Two men     1    (fly) to Australia to play in a golf match. Their team won and both of them were awarded green jackets. On their last night in Australia, they stayed up late drinking. By early morning, they were quite drunk, but they had to get to the airport for their flight. So they drove their    2     (rent) car to the airport. The road was    3    (complete) empty, but suddenly, something jumped out in front of the car. The driver couldn’t stop in time, so the car hit it. The men got out of the car and found a large kangaroo    4    (lie) on the road. Still drunk, one of the men put his jacket on the kangaroo, and then they posed with it for some    5    (photo). All of a sudden, the kangaroo opened    6    (it) eyes, kicked them over and then ran off, wearing the man’s jacket, where    7     was the key     8     the car, his passport and two air tickets.

    9    (late) that day, a cyclist phoned to report a kangaroo wearing a green jacket. Shortly afterwards, the police found    10     had happened. They arrested the two men.

5 . I had been swimming competitively for about five years and was ready to quit because I felt I was horrible at it. I kept ________“Honorable Mentions”(安慰奖). Any ________ knows that you don’t want to have a bookshelf full of “Honorable Mentions”, which you get just because you________.

One summer day, the day________ a big swim meet, I decided to tell my grandma that I was quitting the swim team, but she said, “ Baby, ________ these words: ‘A quitter never wins and a winner never quits.’ You go to that swim meet tomorrow.”

The next day we arrived at the swim meet late, ________ my group of swimmers in the 15/16 age group. My ________ insisted that I be allowed to swim with the________ group. I knew that she was ________ me in the race so that our long drive would not be ________.   As I got on the board, I quickly noticed that these girls were here to do one thing — to ________ me! All of a sudden my grandma’s words________ in my head, “Quitters never win and winners never quit; quitters never win and winners never quit.”

SPLASH!

I was swimming ________ than I’d swum before. As I drew my right arm back, I noticed I was tied with one person. I assumed we were battling for the eighth place and I refused to finish dead last, so I added more kick on the________ 200 yards. I hit the wall and ________ to the left and to the right for the swimmers who had beaten me, but no one was there. They must have gotten out of the ________ already. I raised my head to see my coach ________ hysterically(歇斯底里). My eyes ________ her pointing finger and I couldn’t believe what I saw. The other swimmers had just reached the half point of the ________!   That day, at age 15, I broke the national 17/18-year-old 400-freestyle record. I had hung up my honorable mentions. That day, I ________ them with a huge gold medal.

1.

A．quitting

B．receiving

C．refusing

D．wishing

2.

A．reader

B．swimmer

C．learner

D．athlete

3.

A．show up

B．get out

C．come around

D．give off

4.

A．during

B．after

C．in

D．before

5.

A．remember

B．write

C．have

D．learn

6.

A．winning

B．losing

C．missing

D．considering

7.

A．friend

B．coach

C．fan

D．grandma

8.

A．smarter

B．younger

C．older

D．stronger

9.

A．including

B．calling

C．forgetting

D．teaching

10.

A．seen

B．dropped

C．taken

D．wasted

11.

A．hate

B．love

C．beat

D．praise

12.

A．shouted

B．rang

C．sang

D．heard

13.

A．faster

B．longer

C．later

D．harder

14.

A．most

B．first

C．last

D．over

15.

A．looked

B．swam

C．jumped

D．came

16.

A．time

B．water

C．race

D．breath

17.

A．smiling

B．encouraging

C．running

D．screaming

18.

A．followed

B．held

C．grasped

D．got

19.

A．road

B．pool

C．board

D．field

20.

A．admired

B．joined

C．replaced

D．helped

6 . China Danxia is an impressive and unique landscape of great natural beauty, containing several component parts which have the most interesting sites as well as cultural and local attractions to keep visitors busy.

Ready to explore this characteristic landform in China? Here are the destinations for you.

Danxia Mountain (Guangdong Province)

Danxia Mountain is a noted scenic area near Shaoguan in the northern part of Guangdong Province. It is described as a “world famous UNESCO park of China”. There are a number of temples located on the mountain range and visitors can enjoys many scenic walks in the area. There is also a river that winds through the mountain area and boat trips along the river are offered to visitors.

The Golden Lake (Fujian Province)

The Golden Lake is located in the northwest of Fujian Province. The Golden Lake is surrounded by mountains and forest. Stone bamboo shoots stand tall with springs flowing through them. There are more than 1,000 historic sites, such as the Baishuiji waterfall, lover’s peak, and the 5-kilometer-long calm lake. It is also regarded as “Lake of Gold” by tourists at home and abroad.

Longhu Mountain (Jiangxi Province)

Longhu Mountain is located in Jiangxi Province. It is famous for being one of the birthplaces of Taoism, as many Taoist temples were originally built upon the mountainside. It is particularly important to the Zhengyi Dao as the Shangqing Temple and the Mansion of the Taoist Master are located here. It is known as one of the Four Sacred Mountains of Taoism.

Langshan Mountain (Hunan Province)

Langshan Mountain is one of China’s National Geological Parks famous for its unique Danxia landform, covering an area of 108 square kilometers. It is filled with rich natural scenery and abundant tourism resources. There are more than 500 scenic spots in Langshan Mountain. Among them, the most famous are Tianyi Lane, Chili Peak, Fuyi River, and the Xicun Ancient Dwelling.

1. What can we learn about Danxia Mountain?

A．It has a calm lake.	B．It is famous for its temples.
C．It includes Tianyi Lane.	D．It offers a boat trip.

2. If you are interested in Chinese religious philosophy, you may go to ________.

A．Danxia Mountain	B．The Golden Lake
C．Longhu Mountain	D．Langshan Mountain

3. What do the four attractions have in common?

A．They all have typical Danxia landforms.	B．They all have temples and forest.
C．They are all world famous parks.	D．They are all located in Northwest China.

7 . Tabichi’s father, uncle, and cousins have all worked as teachers. He could see that his relatives were making a real difference to people’s lives and wanted to do the same. So for the past 12 years, Tabichi has worked as a math and science teacher in the hope that his lessons will give students a chance to improve their situations.

However, working at a remote village school in Kenya hasn’t been easy. The unique challenges and obstacles have forced Tabichi to find unique solutions for his students. The school only has one computer and unreliable Internet access. The school also has no library or laboratory. To make matters worse, there are not enough books for all the students and the school is desperately in need of more teachers. Most of the students are not able to concentrate, because they haven’t had enough meals at home.

One of the other major challenges that Tabichi faces is keeping kids in school as long as possible. So Tabichi spends most of his time outside of the classroom working on ways to keep kids in school. When the 36-year-old gets the feeling that a student is at risk of dropping out, he works to persuade families to put more value in education. To help those in poverty afford food, uniforms, and books, Tabichi also gives away 80 percent of his salary. Despite all the obstacles he faces, Tabichi is credited for improving the school and keeping much of the village’s youth in school. He has also managed to set up science clubs and addressed food insecurity issues.

Thanks to his tireless work, his students have excelled. In recent years, students have won national and international science competitions. In March of 2019, Tabichi was voted the best teacher in the world and won the prize of $1 million.

1. What inspired Tabichi to be a teacher?

A．The high salary of teachers.	B．His father’s demand on him.
C．His relatives’ encouragement.	D．Contributions a teacher can make.

2. What is Paragraph 2 mainly about?

A．The life of a remote village in Kenya.

B．The difficulties Tabichi’s school faced.

C．Tabichi’s unique teaching ways for his students.

D．Most of the students’ distraction on their learning.

3. What occupied Tabichi’s most time?

A．Giving students the best lessons.	B．Helping students get rid of poverty.
C．Getting students away from any risk.	D．Persuading students not to drop out.

4. Which of the following can best describe Tabichi?

A．Selfless.

B．Lucky.

C．Energetic

D．Pitiful.

8 . 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

Chinese net users have found a new way to battle desertification by playing virtual planting games Ant Forest. which is under Ant Financial of the Alibaba Group, told the Global Times that they had planted over 50 million trees     1     （cover）about 507 square kilometers across China from 2016 to 2019.

Ant Forest is the first such game in China. In the Ant Forest plan, any activity     2     （consider） low carbon , including walking , taking public transport and online payments, will be converted into virtual “green energy ” The energy will be used to grow a virtual tree in the “ forest ” of the     3     （user）. They exchange     4     for a real tree by paying the corresponding energy. Ant Forest will plant the real trees in spring and autumn each year     5     the help of local authorities in the desert areas. This way of planting trees     6     （recognize） on October 23,2018 by the National Afforestation Committee as     7     means for citizens to fulfill their obligation of planting trees.

The Chinese government attaches great     8     （important）to the protection of ecosystems. China aims     9     （increase）the forest cover to 23 percent by 2020, and to 26 percent by 2035. A new study using data from NASA satellite shows that the Earth becomes     10     （green）as a result of ambitious tree-planting programs in China.

9 . It was a hot, damp summer day. After I________my tank in the local gas station, I started to walk inside to pay. Just then I noticed two elderly________standing back from their car. There was a mixture of shock and________on their faces. I followed their________and saw what they saw: five yellow jackets were building a________around their gas cap. My eyes________. I shared the ladies' fear.

Yellow jackets had never been________to me. When I was a young boy, a friend of mine and I were________and playing in my backyard. I must have________on one of their hidden nests while running.________, both of us were being chased and stung over and over by the yellow jackets. We ran away________with great fear. My mom________ran a cold bath and put us both in it to ease the pain and itching (瘙痒)________giving us medicine to fight all the poison in our little bodies from the stings.

I knew I couldn't let fear stop me now. I________my back pocket for a paper towel I had there, tore out the nest and stepped on it while the________wasps (黄蜂)buzzed around me.________of the ladies thanked me excitedly. I smiled, and nervousness and fear were replaced with________.

In this life, you can't let the fear of being stung either physically or________keep you from doing what is right. We need to go________ourselves and love each other. Don't let the yellow jackets in your life________you back.

1.

A．filled

B．moved

C．charged

D．emptied

2.

A．men

B．women

C．drivers

D．jackets

3.

A．anger

B．pain

C．sadness

D．fear

4.

A．nose

B．ears

C．eyes

D．mouth

5.

A．room

B．nest

C．house

D．hall

6.

A．widened

B．closed

C．opened

D．lowed

7.

A．lovely

B．likely

C．friendly

D．carefully

8.

A．jumping

B．climbing

C．walking

D．running

9.

A．removed

B．stepped

C．paced

D．searched

10.

A．As a result

B．After all

C．Above all

D．At the same time

11.

A．discussing

B．exploring

C．screaming

D．laughing

12.

A．nervously

B．suddenly

C．casually

D．immediately

13.

A．after

B．while

C．before

D．until

14.

A．reached into

B．arrived in

C．got to

D．pulled out

15.

A．happy

B．angry

C．sad

D．worried

16.

A．Neither

B．Both

C．All

D．None

17.

A．pain

B．surprise

C．doubt

D．joy

18.

A．heartedly

B．intelligently

C．emotionally

D．punctually

19.

A．through

B．back

C．ahead

D．beyond

20.

A．hold

B．set

C．hang

D．give