---Who do you think should ____ the responsibility for white pollution?
--- Both the producer and the consumer.
| A．burden | B．replay | C．answer | D．undertake |
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 |
－I’ve read another book this week.
－Well, maybe _____ is not how much you read but what you read that counts.
| A． this | B．that | C．there | D．it |
and short of breath, Andy and Ruby were the first to reach the top of Mount Tai.
| A． | the; a | B． | Tired | C． | Tiring | D． | Being tired |
I don’t understand what the engineer means, but I’ve got ______ rough idea of _____ project plan.
| A．the; a | B．不填; the | C．the; 不填 | D．a; the |