[填空题]If we combine the three study types, we are able to evaluate their relative importance in producting data to the practitioner.

[填空题]If we combine the three study types, we are able to evaluate their relative importance in producting data to the practitioner.

[单项选择]Ironically, a study finds that we’re awful gift-givers precisely because we spend too much time trying to be considerate.We imagine our friends 46 a gift that is impressive,expensive,and sentimental. We imagine the look of happinessand surprise on their faces and the warmth we feel. 47 .But there’s something thatthe most sentimental-gift-givers tend not to think too much about: 48 the gift is practical in the first place. 　　49 , practicality seems like an enemy of great gift giving. Beautiful jewelry, lovely watches, perfect rugs, finely crafted kitchen hardware: These things50great gifts because they communicate something beyond practicality. Theycommunicate that the giver cares. 　　But do the receivers care Often,no. "Gift receivers would be 51 ifgivers gave them exactly what they requested 52 . attemptingto be’thoughtful and considerate’ by buying gifts they did not explicitly request" to surprisethem, the researchers write. Their clever paper asks gi
A. to open
B. opening
C. have opened
D. opened

[单项选择]

All types of stress study, whether under laboratory or real-life situations, study mechanisms for increasing the arousal level of the brain.
The brain blood flow studies show that reciting the days of the week and months of the year increases blood flow in appropriate areas, whereas problem solving which demands intense concentration of a reasoning type produces much larger changes in the distribution of blood in the brain.
Between these basic studies of brain function and real life situations there is still a considerable gap, but reasonable deduction seems possible to try and understand what happens to the brain. Life consists of a series of events which may be related to work or to our so-called leisure time. Work may be relatively automatic—as with typing, for instance, it requires intense concentration and repetition during the learning phase to establish a pattern in the brain. Then the typist’s fingers automatically move to hit the appropriate k
A. increases blood flow in some areas of the brain
B. causes changes in the distribution of blood in the brain
C. demands intense concentration of blood in certain areas
D. is based on the ability to recite the time

[单项选择]Passage One
"In this study, we found that the household media environment was related to a child% academic achievement, " said Dina Borzekowski, EdD, lead author of the study and assistant professor in the Department of Population and Family Health Sciences at the Bloomberg School of Public Health. "① Among these third graders, we saw that even when controlling for the parent’s education level, the child’s gender and the amount of media used per week, those who had bedroom TV sets scored around 8 points lower on math and language arts tests and 7 points lower on reading tests. A home computer showed the opposite relationship-children with access to a home computer had scores that were around 6 points higher on the math and the language arts test and 4 points higher on the reading test, controlling for the same variables. "
The study followed a diverse group of third-grade students from six schools in northern California. During the course of a school year
A. It may not necessarily lead to bad academic performance.
B. It may cause the lowest test scores.
C. It should be avoided by school children.
D. It has direct relationship with lower test scores.