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[主观题]
Please compare F+, Hfr and F’, and what are the results when they cross with F-？
提问人：网友xzwda1007
发布时间：2022-01-07
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【C1】
A．make from
B．make of
C．make up
D．make off
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第1题
At a time when the world is short of causes for celebration, here is a candidate: within the next few months women will cross the 50% threshold and become the majority of the American workforce. Women already【C1】______the majority of university graduates in the OECD countries and the majority of【C2】______workers in several rich countries, including the United States. Women 【C3】______many of the worlds great companies, from Pepsi Co. in America to Areva in France. Womens【C4】______empowerment is arguably the biggest social change of our times. Just a generation ago, women were【C5】______confined to repetitive, humble jobs. They were routinely 【C6】______to casual sexism and were expected to【C7】______their careers when they married and had children. Today they are running some of the organizations that once treated them 【C8】______ second-class citizens. Millions of women have been given more control over their own lives.【C9】______ millions of brains have been put to more productive use. Societies that try to【C10】______this trend—most notably the Arab countries, but also Japan and some southern European countries—will pay a heavy price in the form. of wasted talent and frustrated citizens. This revolution has been【C11】______with only a modicum of friction. Men have,【C12】______, welcomed womens invasion of the workplace, 【C13】______even the most positive changes can be incomplete or unsatisfactory. This particular advance comes with two stings. The first is that women are still【C14】______at the top of companies. Only 2% of the bosses of Americas largest companies and 5% of their【C15】______ in Britain are women. They are also paid significantly less than men【C16】______ average. The second is that juggling work and child-rearing is difficult. Middle-class couples routinely【C17】______that they have too little time for their children. But the biggest losers are poor children—【C18】______ in places like America and Britain that have 【C19】______high levels of female【C20】______ in the labour force with a reluctance to spend public money on child care.
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第2题
In English, words usually have more than one meaning. There is no word which has only one meaning.
第3题
Here&39;s a familiar story. You&39;re sitting at the dinner table with a furry, four-legged friend scratching at your feet. When you look down, those cute eyes are almost impossible to resist.
What is it about a dog&39;s gaze that makes it so charming？ A new study by Japanese scientist Miho Nagasawa seems to have found the answer, and it has to do with something called the cuddle(爱抚)chemical.
The cuddle chemical has another, more scientific name: oxytocin. Oxytocin is a substance in the blood that encourages bonding. Levels of oxytocin increase, for example, when a mother feeds her newborn baby. According to Nagasawa&39;s study, the same is true when we look deeply into the eyes of a dog.
The results of this study can tell us a lot about the history of the bond between humans and dogs. It all started somewhere tens of thousands of years ago. Scientists believe that wolves used to follow humans who were hunting large animals. The wolves would eat the food left behind by the humans.
Humans realized that they could use the wolves to help with the hunt, and eventually both species began to work together toward survival.
Over time, the wolves that interacted with the humans began to change. They became more loyal to their human partners. The wolves and humans started to depend on each other and bond with each other. These changes are what caused some of the wolves to turn into what we now know as dogs, a new specie^ evolved to better survive in their environment.
This process depended a great deal on the bond humans formed with them. And according to Nagasawa&39;s study, this bond was formed with the help of oxytocin, the cuddle chemical.
11. What do we know about oxytocin？
A.It regulates blood flow
B.It promotes bonding
C.It is in the human gene
D.It is good for health
When we look deeply into a dog's eyes, the levels of our oxytocin ____.A.reduce over time
B.go either up or down
C.are on the rise
D.remain unchanged
At the beginning wolves followed humans to ____.A.eat the food left by humans
B.guard against large animals
C.take humans for food
D.hunt large animals together
Over time some wolves turned into dogs ____.A.due to their loyalty
B.due to the changing environment
C.for better survival
D.for better cooperation
What does Nagasawa9s study aim to do？A.Explore the role of human-wolf partnership
B.Show the characteristics of the cuddle chemical
C.Explain the bond between humans and dogs
D.Understand the evolution of species
第4题
Piers did the most careful experiments, and demonstrated that fermentation which took place in the air of Paris did not do so in the glacial air on the high Alps.
第5题
【填空题】Lesson 5 词汇拓展，选词填空 expedite assign visual sector coordinate transfer specialize airborne startup collision vacate Fill in the blank with words or expressions in the table above 1) As the aircraft glided with a broken windshield and no engine power, the crew made _____contact with the ground and landed on the highway. 2) After the aircraft gets _____after takeoff , it will be handed off to the approach control. 3) After engine _____, the pilot will be ready to contact the ground control for taxi instructions. 4) The best solution to avoid mid-air _______is that all pilots adhere to ATC instructions and clearances. 5) After the landing aircraft comes to a full stop on the runway, it will be instructed to _______the runway by the ground control via an exit taxiway. 6) The aim of implementing RVSM is to increase airspace capacity and ______flow of traffic. 7) He is an aerodrome controller, that is , he ______in providing ATCS as well as FIS and ALS to flights moving on the ground. 8) In case of adverse weather conditions, ATC need to ______with the military authorities to request the use of their airspace to avoid bad weather areas. 9) In order to relieve the workload and ease frequency congestion, some ACCs are divided into different smaller ______. 10) When the departing aircraft reaches the upper limit of the approach airspace, it will be ______to ACC. 11) In order to facilitate identifying an airplane on the radar, each IFR flight has been _______a transponder code by ATC.
第6题
Which of the following is not the characteristic of gene mutation?
A、Irreversibility
B、Repeatability
C、Repeatability
D、Parallelism
第7题
Dominant mutation and recessive mutation can both be found in nature. Dominant mutation can be found easier than recessive mutation, because
A、Dominant mutation is homozygous.
B、Dominant mutation can be found at M1.
C、Dominant mutation can be homozygous quicker than recessive mutation
D、Mutation rate of dominant mutation is higher than recessive mutation.
