1、I’ve never had a boyfriend and ________ has any of my friends.
A. so B. neither C. never D. either
2、The hero of the story is an artist in his .
A.thirtieth B.thirty C.thirtys D.thirties
3、 the instructions on the packet when you take the drug and the drug, I think, will work soon.
A. Follow B. To follow C. Following D. Followed
4、She __________ get here soon or she’ll miss the opening ceremony.
A．be able to
B．need
C．had better
D．dare
5、She is unfit for the position,________?
A. is she B. isn’t she C. doesn’t she D. does she
6、China has seen _______dramatic decline in rural poverty, but the problem is on _______increase in Africa and South Asia.
A．a; /
B．/ ；the
C．the ;an
D．a; the
7、Jack failed to finish his project on time. If he me about it, I would have given him a hand.
A. tell B. told
C. had told D. would tell
8、I’ve ordered some pizza, so we _______ worry about cooking when we get home tired.
A. can’t B. dare not
C. needn’t D. may not
9、Before I ________， there are two more things to be said.
A. turn up B. come up
C. wind up D. hold up
10、Tomorrow we'll pay a visit to a museum, next to _______ is a nice restaurant where we can have Italian food．
A. that B. this C. it D. which
11、The employees have not been paid________ since the new manager took over this company last year.
A. absolutely B. commonly
C. regularly D. Ordinarily
12、Mr. Black Shanghai in a few days. Do you know when the earliest plane________off on Sunday?
A．is leaving, is taking B．is leaving, takes
C．leaves, will take D．leaves, takes
13、My son’s question _______ there was ham in a hamburger got me _______ how English could be a crazy language.
A.if; thinking B.whether; thinking C.that; to think D.X; to think
14、The girl stood looking round in all directions with her luggage in her hands, but ________ no one had come to meet her.
A．barely
B．entirely
C．precisely
D．apparently
15、Suddenly, a rabbit ________ run out by the road, obviously, it has been injured.
A．in advance
B．in particular
C．in harmony
D．in panic
16、We’ll never forget the ________ Zhong Nanshan has made to the fight against COVID-19.
A．press
B．donations
C．contributions
D．efforts
17、---What do you think of store shopping in the future?
--- Personally, I think it will exist along with home shopping but _________.
A.will not replace B.will not be replaced C.will not replacing D.will not being replaced
18、All those ________ the pop singing group cheered, applauding as they sang.
A.watched B.was watching C.watching D.to watch
19、The National Stadium which looks very magnificent ________ 258,000 square meters in area.
A．is measuring
B．is measured
C．measured
D．measures
20、—What’s wrong with you?
—Oh, I am sick. I ________ so much ice cream just now.
A. shouldn’t eat B. mustn’t eat
C. couldn’t have eaten D. shouldn’t have eaten
21、Teaching Positions in Institute for Artificial Intelligence at Baking University
Announced and set up in 2019, the Institute for Artificial Intelligence at Peking University (abbreviated as PKU-IAI) serves as a backbone to connect all AI related research and applying activities in Peking University. The PKU-IAI aims to make both a big leap into the future, and a natural next step for an institution that has been at the forefront of artificial intelligence from the start. The PKU-IAI also aims to enable Peking University to play the role of a worldwide leader in the responsible and ethical evolution of technologies that are ready to transform society.
The PKU-IAI is now providing open teaching positions, including the fields of the following:
·Natural Language Processing
·Machine Learning
·Robotics
·Intelligent Software Systems
·Intelligent Healthcare
·Computational Social Science
Requirements
1. The applicants should have a solid background and produced influential research results or development experiences in the mentioned fields of artificial intelligence.
2. The applicants are expected to be under the age of 40, and obtain a Ph. D. from well-known universities within recent 5 years and have outstanding research and development records.
Salary and Working Conditions
The university and the research group provide competitive salary and working conditions for successful applicants.
Application Procedures
1. The applicants should send a detailed CV, research statement, teaching statement, a future plan of the next 3-5 years to aipku@pku.edu.com. The title of the email should be in the form of “Teaching Application to PKU-IAI”.
2. The first round of interview will take place at the same time with the online Young Scientists Forum. This forum will also serve as an exciting chance for the young researchers to exchange academic ideas and latest information.
Important Dates
·Application Submission Deadline: May 2nd, 2021
·Forum-Acceptance Notification: May 14th, 2021
·Young Scientist Forum May 22nd，2021
·Next round of interview: May 30nd, 2021
【1】The position for the field of ______ is not provided.
A．Machine Learning
B．Natural Language Processing
C．Brain Inspired and Al Chips
D．Intelligent Healthcare
【2】Which of the following requirements for the applicants is true?
A．The title of the application emails should go as requested.
B．The applicants graduating from any university are welcomed.
C．The requirement for the salary must be included in the email.
D．The applicants are supposed to be under the age of thirty five.
【3】When will the applicants go for the First round of interview?
A．May 14th, 2021
B．May 2nd, 2021
C．May 30st, 2021
D．May 22nd, 2021
22、There are a lot of reasons to love biking, whether it brings back childhood memories of the past, provides an eco-friendly mode of transportation, or gives you an energizing way to move your legs. 【1】
What are the benefits of biking?
Biking can also help get you stronger without overly demanding your joints. 【2】Biking is a non-weight bearing activity, which means it puts less stress on joints of the knees and ankles.
【3】
Just because you’re sitting down when biking, it doesn’t mean you can’t get a challenging training. There are a number of levers you can pull to level up or down your ride. This can come in the form of resistance, hills, and speed. A variety of all three at intervals is a great choice.
How many calories does an average bike ride burn?
【4】 Calorie burn is completely dependent on the weight of the rider, the amount of energy they are using to ride, and the time and distance they are riding. The more power output, the harder the ride, the more calories burned.
How often should you make your bike ride?
There are no hard and fast rules on how long and often you should ride a bike, as it depends on individual fitness levels, goals, and more. 【5】 If you are not working as hard or have different goals like endurance or recovery, then 45-60 minutes may be appropriate.
A．What can you get when biking?
B．How do you make your bike ride suitable?
C．There’s no magic number for calories burned while biking.
D．Indoor biking can provide more control for a beginner, making him or her feel safer.
E．Cycling, whether indoors or outdoors, can benefit the lungs, he muscle, and the mind.
F．Besides, biking can also be a great practice with benefits beyond getting your heart pumping.
G．If you are doing shortly high intensity on cycling, then 20-30 minutes can get you great benefits.
23、For more than fifty years, a worker was forced to sit on the back of a truck and slowly drop plastic barriers（障碍）
to set out lanes（车道）on the Golden Gate Bridge in San Francisco. Every day, their direction changes to control the traffic, meaning an employee had to go through the difficult task every twenty-four hours.
But a new piece of machinery means the work can be completed in a matter of minutes. A new “zipper truck” has been introduced. The vehicle lays and moves a lane barrier as it drives over the bridge. Last weekend, the bridge was closed so the new safety barrier, designed to reduce the dangers of head-on crashes, could be set up.
For the longest period in its nearly eighty-year history, the bridge was closed early Saturday to all but walkers, cyclists and buses to set up the barriers on the 1.7-mile bridge. A survivor of a 2008 head-on crash on the bridge spoke Sunday from a wheelchair to help introduce the new barrier, made of steel-clad concrete（铜包混凝土）blocks that can move across the bridge’s six lanes to meet traffic needs.
Gr. Grace Dammann pushed for a safer barrier since becoming unable to walk after the accident. She said she decided to drive near the middle of the bridge, which was called the “suicide（自杀）lane”, because she and her daughter were running late. Brian Clark, who was driving in the opposite direction, had just learned his father had cancer. “He suddenly lost control of the wheel, crossed over and hit my car,” Dammann said.
She said she and Clark became friends as they persuaded（说服）the government to use the MYM30 million barrier. “I am so thankful,” said Dammann, who came to the ceremony with Clark.
“Clark and I thank you.”
【1】What is the zipper truck for?
A. Building bridges. B. Repairing the road.
C. Carrying plastic barriers. D. Setting up safe lane barriers.
【2】What can we infer about the Golden Gate Bridge?
A. It is being repaired now. B. It is a bridge with eight lanes.
C. It had very dangerous lanes before. D. It is too old to be used at the moment.
【3】What do we learn about Dammann and Clark?
A. They organized the ceremony. B. They are both government officials.
C. They designed the new zipper truck. D. They were in favor of the new barrier.
【4】What is the text mainly about?
A. A worker on the Golden Gate Bridge. B. A great bridge in San Francisco.
C. A new safer barrier system. D. A serious traffic accident.
24、Climate change is changing the migration routes of animals worldwide. Take the mule deer for example. Every spring in Wyoming, green-up first appears at lower altitudes before progressing up the mountainside. Migrating mule deer follow and seek food on this green wave. But as a changing climate leads to more frequent and more severe droughts, the greenery is not as abundant as it used to be.
Ellen Aikens, a researcher from the University of Wyoming, tracked mule deer as they surfed the green wave. In comparison to wet years, the green-up lasted across the landscape for about half as long in drought years and was also fragmented. Although the deer were able to keep up with the faster green wave, the nutritional value was lower, leaving the animals less prepared for the challenges of the year ahead.
Meanwhile in Europe, the population of Bewick’s swans that spend the winter in the Netherlands is declining. But when researchers looked at the data more closely, they found an increase in the wintering population of swans in Germany. It turns out that since the 1970s, the swans’ wintering habitat has shifted an average of 13 kilometers to the east each year.
“The swans like to spend time where it’s 5℃. And the temperature line has shifted in the same rate as the swans shifted eastward,” said Rascha Nuijten, an ecologist at the Netherlands Institute of Ecology.
These findings are important to our understanding of the conservation of migrant animals. When it comes to protecting a certain species, it’s not just about the current situation. Nature is dynamic. And the species that is present now might not be present in 10 years, not because we didn’t protect it but because maybe it is dynamic in its way. We need to include the dynamics of nature into our legislation and management.
【1】What’s the challenge the mule deer face?
A．Wet years.
B．Low altitudes.
C．Fast green wave.
D．Lack of quality food.
【2】What do we know about Bewick’s swans from Paragraph 3?
A．They are endangered.
B．They used to spend winter in Germany.
C．They move their wintering habitats eastward.
D．Germany has more of them than the Netherlands.
【3】What does Rascha Nuijten intend to tell us?
A．Its warmer in the east.
B．The 5℃ line shifts at a fast rate.
C．The swans move with the temperature line.
D．Climate change affects the swans’ feeding habits.
【4】What is the purpose of the passage?
A．To introduce two research findings.
B．To appeal to protect animals in a dynamic way.
C．To discuss methods of fighting climate change.
D．To explain why animals change their migration routes.
25、 I believe we can create our own happiness. I believe the real magic in the world is done by humans.
I was sitting in my ______ at a stoplight listening to the radio, thinking how happy and warm I was in it. It was ______ outside, and I thought, “Life is good."
Now, this was a long line. As I ______ , I noticed two people huddled (挤在一起) together at the bus stop. The couple seemed to be doing their best to keep ________To my eyes, they were unhappy and uncomfortable. They looked ________Their coats looked like they came from a bargain store.
But then I saw their ______.Yes, they were huddling, but they were also laughing. They seemed to be sharing a good ______, and suddenly, instead of pitying them, I envied them. I thought, "Huh, what's so funny?" They didn't notice the wind. They weren't looking at my car thinking, "I ______ I had that."
You know ______ a single moment feels like an hour? Well, in that moment, I realized I had ______ things were all bad for them, but they weren't. And I understood we all have the ______to make moments of ______ happen.
Now, maybe that's easy for me to say. I feel lucky to have a house with a roof and a wife who ______ me. I felt this ______ even when I was working at Long John Silver's. In the beginning, it didn’t seem like a promising job. But ______ I had a job. And frankly, it was ______. After two weeks, I knew all I needed to know, and it freed my mind. The job allowed me to ______ about what my life could become.
The first year I worked there, we got robbed. I thought I was going to die. But everything ______ out all right. A lot of people ______ life as a series of miserable tasks, but after that, I didn't.
I believe this is _____ all of us can do: Try to be happy within the context of the life we are actually living. Happiness is not a situation to be longed for or a convergence of luck. Through the power of our own minds, we can help ourselves.
【1】A.store B.office C.house D.car
【2】A.bright B.cold C.warm D.dark
【3】A.walked B.returned C.complained D.waited
【4】A.warm B.calm C.close D.active
【5】A.innocent B.helpless C.poor D.strange
【6】A.coats B.faces C.bags D.backs
【7】A.joke B.speech C.offer D.idea
【8】A.regret B.promise C.wish D.hope
【9】A.when B.how C.why D.what
【10】A.worried B.found C.admitted D.reckoned
【11】A.power B.promise C.demand D.chance
【12】A.excitement B.satisfaction C.happiness D.trouble
【13】A.makes up for B.puts up with C.breaks up with D.keeps up with
【14】A.way B.case C.point D.sense
【15】A.at first B.at least C.in fact D.in brief
【16】A.funny B.fine C.precious D.easy
【17】A.come B.care C.bring D.dream
【18】A.proved B.helped C.turned D.got
【19】A.think B.look C.regard D.act
【20】A.anything B.something C.everything D.nothing
26、假定你是李华，从互联网上得知一个国际中学生组织将在新加坡（Singapore）举办夏令营，欢迎各国学生参加。请写一封电子邮件申请参加。
内容主要包括：1.个人情况； 2.参加意图；3.希望获准
注意：1.字数100左右； 2.可以适当增加细节，以使行文连贯
Dear Sir or Madam,
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