Why, according to Selye, is a little stress good to employees to some extent A: As it mobilizes an individual to achieve peak performances in activities and tasks. B: As, if without stress, nothing can be achieved successfully and fully. C: As stress is an important way to prevent inaction and languor during the working process. D: As stress is the ligament between the employees and the organizations and helps the organizations to identify qualified employees.

Which of the following are possible mental responses to stress? ( ). A: decreased digestive activity B: mental slowness C: forgetfulness D: difficulty in concentrating

For a system of an ideal gas, in which process of the following that the heat absorbed by the system and the work done toward the surroundings are positive? A: Isochoric (等体) and pressure decreasing process. B: Isothermal (等温) and expanding process. C: Adiabatic and expanding process. D: Isobaric (等压) and compressed process

70（） A: fair B: excessive C: good D: mere

Assimilation is a process in which members of an ethnic group are __________ into the dominant culture, __________ their culture in the process.