The passage focuses on .

A． why Pepperberg decided to carry out the experiment

B． how Pepperberg proved her theory abottt animals' thoughts

C． the new way of communication Pepperberg proposed

D． the problems that Pepperberg faced in the experiment

[单选题]The second paragraph focuses on ______.A． World Health OrganizationB． flus in Hong Kong and SpainC． the economy of Southeast AsiaD． possible effects of a bird flu outbreak

[单选题] Software （75） focuses on three attributes of the program: software architecture, data structure, and procedural detail.（75）A． analysisB． designC． installationD． upgrade

[单选题]Software______focuses on three attributes of the program：software architecture，data structure，and procedural detail．A．analysisB．designC．installationD．UpgradeA．B．C．D．

[单选题]The light is still on. Why not ______?A． turn it onB． turn it offC． turn on itD． turn off it

[单选题]—The light in his room is still on. Do you know??____________?—In order to prepare for the coming exam.A． if he works hard B. why he stays up so lateC． why is he so busy D. when he will stop working

[单选题]______no need ______ the radio as I’ve used to studying with it on.A.It’s;

[单选题]I tried to get outof the business _____I found impossible to carry on.A.why

[单选题]The situational approach is a grammar-based language teaching method which

[单选题]Although we have achieved some success, we should work harder ______ now on

[单选题]The topic of the passage is that __.A．the control of population is essential to the development of a nationB．natural resources are important to the economic development of a countryC．awareness of the effects of man's actions is as important as popul