26. 【答案】[B] absorb user attention

　　27. 【答案】[D] reduces mother-child communication

　　28. 【答案】[D] parents need to respond to children’ s emotional needs

　　29. 【答案】[C] ensure constant interaction with their children

　　30. 【答案】[A] give their parents some free time

　　【答案解析】

　　26.【答案】[B] absorb user attention

　　本题是细节题，根据题干可以定位到原文第一段原句 digital products are there to promote maximal engagement. B选项中absorb和promote对应。user attention和engagement 对应， 因此B选项是正确选项。

　　27.【答案】[D] reduces mother-child communication

　　本题是细节题，根据题干可以定位到原文第二段原句 She found that mothers who sued devices during the exercise started 20 percent fewer verbal and 39 percent fewer nonverbal interactions with their children. D选项中reduce communication和started fewer verbal and fewer nonverbal interactions对应。因此D选项是正确选项。

　　28.【答案】[D] parents need to respond to children’ s emotional needs

　　本题是例证题，根据题干可以定位原文第三段原句there needs to be a balance and parents need to be responsive and sensitive to a child’s verbal or nonverbal expressions of an emotional need, D选项中need to respond to children’ s emotional needs正好和本句同意替换。因此D选项是正确选项。

　　29.【答案】[C] ensure constant interaction with their children

　　本题是细节题，根据题干可以定位到原文第四段原句oppressive ideology that demands that parents should always be interacting with their children. C选项中constant interaction 与always be interacting 同义替换，因此C选项是正确选项。

　　30.【答案】[A] give their parents some free time

　　31. 本题是细节题，根据题干可以定位到原文第四段原句particularly if it gives parents time to have a shower, do housework or simply have a break from their child. A选项give their parents some free time和gives parents time 同义替换，因此A选项是正确选项。