[多项选择]Passenger with two bags should report to the counter

[单项选择]

Researchers report that doing two or more things at once may decrease efficiency and actually take extra time switching from one task to another. In the most severe cases, it can even mean the difference between life and death.
"People get tired when they’re trying to multitask(多任务化) ," and in some cases a person could ultimately create more work for himself, according to one of the lead authors, David Meyer, of the university’s psychology department.
The researchers found that time was lost in just switching from one task to another, and that time costs increased with the complexity of the tasks. The subjects got "up to speed" faster when they switched to tasks that were familiar.
When people, say, juggle browsing the Web and using other computer programs, or talk on the phone while driving, they are using their "executive control" processes in their brain, the re searchers said. Those processes can be likened to
A. death
B. inefficiency
C. extra time
D. life

[填空题]What were the two men’ s bags full of

[单项选择]News reports say peace talks between the two countries have ______ with no agreement reached.
A. broken down
B. broken out
C. broken in
D. broken up

[单项选择]It takes ______ two days to finish this report.
A. he
B. him
C. his

[单项选择]It took______two days to finish this report.
[A] he [B] him [C] his

[填空题]A=Report 1 B=Report 2 C=Report 3 D=Report 4
Which report (s) say (s) that...
· hot weather may cause serious health problems associated with air pollution (71)
· a weather warning system is established to help people away from danger heat (72)
· not only people but also animals and crops are victims of the heat wave (73)
· there were controversies on the issue of global warming (74)
· human activities contribute to global warming (75)
· the deadly heat wave cannot kill people (76)
· hot weather will have its effects on consumers (77)
· reducing exposure to air pollution can decrease deaths associated with pollution
(78)