blank experiment

The fact () he succeeded in the experiment pleased everybody.

A、blank

B、which

C、that

D、while

their ownscreen use. “Tech is designed to really suck on you in, ” says Jenny Radesky in her study play, "and digital products are there to promote maximal engagement. It makes it hard to disengage,and leads to a lot of bleed-over into the family routine. ”

Radesky has studied the use of mobile phones and tablets at mealtimes by giving mother-child pairsa food-testing exercise. She found that mothers who sued devices during the exercise started 20percent fewer verbal and 39 percent fewer nonverbal interactions with their children. During aseparate observation, she saw that phones became a source of tension in the family. Parents wouldbe looking at their emails while the children would be making excited bids for their attention. Infants are wired to look at parents’ faces to try to understand their world, and if those faces areblank and unresponsive—as they often are when absorbed in a device－it can be extremely7disconcerting foe the children. Radesky cites the “still face experiment ” devised by developmentalpsychologist Ed Tronick in the 1970s.

In it, a mother is asked to interact with her child in a normalway before putting on a blank expression and not giving them any visual social feedback; The childbecomes increasingly distressed as she tr ies to capture her mother ’s attention. "Parents don&39;t have tobe exquisitely parents at all times, but there needs to be a balance and parents need to be responsiveand sensitive to a child ’s verbal or nonverbal expressions of an emotional need," says Rade sky. On the other hand, Tronick himself is concerned that the worries about kids&39; use of screens are bornout of an “oppressive ideology that demands that parents should always be interacting children: “It’s based on a somewhat fantasized, very white, very upper-middle-class ideology thatsays if you’re failing to expose your child to 30,000 words you are neglecting them.”

Tronickbelieves that just because a child isn ’t learning from the screen doesn ’t mean there －particularly if it gives parents time to have a shower, do housework or simply have a break fromtheir child. Parents, he says, can get a lot out of using their devices to speak to a friend or get somework out of the way. This can make them feel happier, which lets then be more available to theirchild the rest of the time.

26.According to Jenny Radesky, digital products are designed to ______.

A.simplify routine matters

B.absorb user attention

C.better interpersonal relations

D.increase work efficiency

Radesky’s food -testing exercise shows that mothers ’ use of devices ______.A.takes away babies ’ appetite

B.distracts children ’s attention

C.slows down babies ’ ver bal development

D.reduces mother-child communication

Radesky’s cites the “still face experiment ” to show that _______.A.it is easy for children to get used to blank expressions

B.verbal expressions are unnecessary for emotional exchange

C.children are insensitive to changes in their parents ’ mood

D.parents need to respond to children's emotional needs

The oppressive ideology mentioned by Tronick requires parents to_______.A.protect kids from exposure to wild fantasies

B.teach their kids at least 30,000 words a year

C.ensure constant interaction with their children

D.remain concerned about kid's use of screens

According to Tronick, kid ’s use of screens may_______.A.give their parents some free time

B.make their parents more creative

C.help them with their homework

D.help them become more attentive

请帮忙给出每个问题的正确答案和分析，谢谢！

rst began college. She said, “I was always well-prepared for my examination. But I would go in to class to take the exam, and I would fall apart. I could not answer the questions correctly—even though I knew the answers! I would just blank out because of nervousness and fear.” Hitoshi Sakamoto, an anthropology student at Temple University in Tokyo reports similar experiences.

These two young students were experiencing something called test anxiety. Because a student worries and is stressed about a test, his or her mind does not work as well as it usually does. The student cannot write or think clearly because of the severe tension and nervousness.

Now there are special university courses to help students. In these courses, advisors and psychologists try to help students by teaching them to, manage test anxiety. Such a course helps students learn to live with stress and not fail because of it. First students take a practice test to measure their worry level. If the tests show that their stress level is high, the students can take a short course to manage the fear. These courses teach students how to relax their bodies. They get training to become calm in very tense situations. By controlling their nervousness, they can let their minds work more easily. Learned information then comes out without difficulty on a test.

Doreen Sykora saw immediate results after taking such a course. She now has enthusiasm about the relaxation methods. “Mostly, what I do is imagine myself in a very calm place. Then I imagine myself picking up a pencil. I move slowly and carefully. I breathe easily and let all the tension out. With each breath, more worry leaves me. It really works too. My grades have improved great! I’m really doing well at McGill now. This relaxation method works not only on examinations, but it has improved the rest of my life as well.”

For Hitoshi in Tokyo, the results were the same. He is enjoying school a lot more and learning more.

11. What is the similarity between Doreen Sykora and Hitoshi Sakamoto？

A. Students from the same university. B. Failing in all the examinations.

C. Experiences of test anxiety. D. Having the same poor studying habits.

12. These are signs of test anxiety EXCEPT________.

A. worries about a test. B. stressed about a test.

C. low grades and poor study habits. D. nervousness during the test

13. What’s the purpose of some special university student-help courses？

A. To help students to reduce test anxiety.

B. To show a stress level experienced by students.

C. To learn more knowledge about test anxiety.

D. To have a better understanding of test anxiety.

14. What’s the meaning of “blank out” in paragraph 1？

A. To be like a blanket. B. To be sure of an answer.

C. To be relaxed. D. To be unable to think clearly.

15. What’s the organization of passage？

A. Examples — theories — ideas.

B. Problem — strategy — result.

C. General statement — examples — result.

D. Strategy — experiment — examples.

流行病学实验(epidemiological experiment)

空白对照(blank control)

All apparatus ______ (test)before the experiment began.

A.href=”_blank”

B.name=”_blank”

C.target=”_blank”

D.href=”#blank”

If they ______ (not help)us, our experiment would have failed．

A.taken

B.ound

C.hosen