2 . These animal dads have some seriously strange ideas about fatherhood.
Barbary macaque
Unlike human dads boasting of their kids' winning contests or college acceptances, barbary macaques, monkeys that are native to North Africa, show off babies as a way to impress each other and build social networks. These monkeys live in troops of about 30 members, and life centers around the babies born each spring.
During baby season, males carry the infants, even picking up little ones that aren’t their own offspring (后代). However, there are status symbols, used to build male social networks and connections within the group. The infants can serve as a social passport, to approach other males and hang out with them. After all, it’s much simpler to break the ice if you have a cute baby in hand.
Sand grouse
Lots of dads bring home the bacon. But for young sand grouses living in Namibia’s dry deserts, water is the essential resource. Sand grouse fathers are the frequent flyers that travel almost 125 miles each day to fill up for the family at a watering hole.
With no other way to transport water, male sand grouses settle in the pool, rocking back and forth to bathe their belly feathers. Filling up can take 15 minutes, leaving them exposed to killers like falcons (猎鹰). But it all pays off. The dads return home after a long day and are able to provide their babies with few precious tablespoons of liquid.
Pipefish
Pregnant pipefish males-yes, males-give birth to live young from eggs that females deposit in their brood pouches (育儿袋). This mothering act has earned them praise as devoted animal dads.
But it turns out that the pregnant pipefish also has a wandering eye. If he sees a bigger female he often aborts (流产) existing eggs. If he stops exporting nutrients to the developing embryos (胚胎) while reabsorbing nutrients from abortions, he assures enough resources to invest in the more rewarding offspring.
Blue poison dart frog
Females of this species lay only about half a dozen precious eggs. That is maybe why dads are so devoted to them. Frog eggs must stay watery or moist, and these devoted dads accomplish that by regularly urinating on them over the course of 10 days, until they hatch (孵化) as tadpoles.
1. Barbary macaques carry their kids around in order to _____.| A．show how proud they are about being a father. |
| B．show their family strength within monkey groups. |
| C．center around their kids as a tradition. |
| D．build up better relations with other monkeys. |
| A．barbary macaque and sand grouse. |
| B．sand grouse and pipefish. |
| C．pipefish and blue poison dart frog. |
| D．sand grouse and blue poison dart frog. |
| A．Sand grouse carries the water by drinking it first and then spitting it out. |
| B．Pipefish gives up some eggs in order to make himself stronger. |
| C．Male blue poison dart frog protects the eggs by keeping them wet. |
| D．Sand grouse has to compete for water with the falcon. |
| A．The food of the restaurant isn’t worth the fame it gets. |
| B．It’s almost impossible to dine at the restaurant tonight. |
| C．He has booked a table at the restaurant beforehand. |
| D．He is not fond of French food very much. |
7 . I’m a talker. I am keen on debating, gossiping and teasing when I have people to talk to. Under lockdown, however, I’ve only had my partner, Peter.
We not only lived, worked and travelled together, we mostly socialized together, too. Under the first UK lockdown, our already closeness began to feel uncomfortable. While talking to Peter, I could see his attention drift.
For the first time in our 10 years together, we needed to be alone. I tried to manufacture this by going on walks on my own, but a short walk wasn’t doing the job. I had hiked in remote spaces all over the world but always in a pair or group — for safety reasons. I considered my options and hit upon an idea: the semi-solo hike.
Could we do a circular hike but walk in different directions? This would give us the space and peace of a solo hike — done by a person alone. It felt like a promising way out, and he agreed to give it a try.
We started with a four-mile loop (环路) from Reeth. At the start, we parted ways. At first, I was aware of how close we were, which lessened the appeal. As I gained ground, however, I found myself very much alone. I set my own pace, and I decided to take my time.
I sat on a rock and breathed out. That moment — with the weak sun through the clouds and the breeze blowing — felt extraordinary to me. I was born and raised in London and had never imagined leaving until I met an outdoorsman. Now, my former life as a city girl felt crazy. In remembering what I had gained, I felt the tension leave me. There, in the chilly air, I no longer needed to talk. The semi-solo hike gave us a shared experience with added room to breathe.
I didn’t see Peter on the way but reunited back where we started, both pleased.
The semi-solo hike is admittedly silly in theory, but for me it has been a lifeline. It has given me the gift of time alone and, in a year of constant closeness, the joy of reuniting.
1. What motivated the author to adopt the semi-solo hike?| A．Peter’s disinterest in her words. |
| B．Her habit of venturing into the wild. |
| C．The lack of privacy under lockdown. |
| D．Her desire to engage in outdoor exercise. |
| A．Their routes coincide sometimes during the hike. |
| B．They depart in a separate way to different destinations. |
| C．They hike in each other’s company throughout the journey. |
| D．They start and return to the same place by a different route. |
| A．Fearless and refreshed. | B．Free and relaxed. |
| C．Tense and depressed. | D．Upset and embarrassed. |
| A．An appropriate distance creates beauty. |
| B．There are more solutions than difficulties. |
| C．Access to nature is better than social circles. |
| D．Hiking helps improve interpersonal relationships. |
New Testing Method in Era of Online Learning
In research published today in Science of Learning, engineers from Rensselaer Polytechnic Institute demonstrate how a testing strategy they call “distanced online testing” can effectively reduce students’ ability to receive help from one another in order to score higher on a test taken at individual homes during social distancing.
“Often in remote online exams, students can talk over the phone or internet to discuss answers,” said Ge Wang, a chair professor of biomedical engineering at Rensselaer and the corresponding author on this paper. “The key idea of our method is to minimize this chance via discrete optimization(离散优化)aided by knowledge of a student’s competencies.”
When a distanced online test is performed, students receive the same questions, but at varying times depending on their skill level. For instance, students of highest mastery levels receive each question after other groups of students have already answered those questions. This approach, Wang said, reduces the motivator for students to receive help from those who have more mastery of the material. In order to determine the order of each student’s questions, their competence levels are estimated using their grade point averages, SAT scores, or midterm scores, depending on what is available at a specific point in the semester.
According to statistical tests and post-exam surveys, this method reduced the points gained through cheating by orders of magnitude (数量级) when compared to conventional exam methods. As an added benefit, Wang said, when students knew collusion would not be possible, they were more motivated to study class material. Wang and his colleagues hope to share this innovation of teaching methods and theory beyond the Rensselaer campus.
“We plan to develop a good platform so that others can easily use this method,” said Wang, a member of the Center for Biotechnology and Interdisciplinary Studies at Rensselaer.
