Private cars will be required to stay off roads one out of five weekdays ____ the traffic pressure.
| A．to reduce | B．reducing | C．reduced | D．reduce |
Over the past decades, sea ice _____ in the Arctic as a result of global warming.
| A．had decreased | B．more than | C．attach | D．apply |
The medicine works more effectively ______ you drink some hot water after taking it.
| A．as | B．until | C．although | D．if |
There is a great deal of evidencethat music activities engage different parts of the brain.
| A． | indicate | B． | indicating | C． | to indicate | D． | to be indicating |
The system has been designed to give students quick and easy ______ to the digital resources of the library.
| A．access | B．passage | C．way | D．approach |
The incomes of skilled workers went up., unskilled workers saw their earnings fall.
| A． | Moreover | B． | Therefore | C． | Meanwhile | D． | Otherwise |