______ most efficient way to understand thousands of new words is to gain ________ good knowledge of basic word formation.
| A．A; a | B．The; 不填 |
| C．A; 不填 | D．The; the |
The difference in thickness and weight from the earlier version makes the iPad2 more comfortable_______.
| A．held | B．holding | C．be held | D．to hold |
The lack of eco-friendly habits among the public is thought to be a majorof global climate change.
| A． | result | B． | cause | C． | warning | D． | reflection |
—Shall I inform him of the change of the schedule right now?
—I am afraid you _______,in case he comes late for the meeting.
| A．will | B．must | C．may | D．can |
She has a gift for creating an atmosphere for her students ____allows them to communicate freely with each other.
| A．which | B．where | C．what | D．who |
Tsinghua University,in 1911,is home to a great number of outstanding figures.
| A． | found | B． | founding | C． | founded | D． | to be founded |