It is clear that the whole world is passing through a social revolution in which a central _____ must be taken by scientists and technologists.
| A．process | B．attention | C．measure | D．part |
. —What about putting some pictures into the report？
— A picture is worth a thousand words.
| A．No way！ | B．Why not? | C．That’s right. | D．No matter. |
Buses have routes. They _________ and _________people at
different places on the routes.
| A．pick off, get off | B．pick out, drop out |
| C．pick up, drop off | D．pick in, get out |
The school rules state that no child shall be allowed out of the school
during the day, ______ accompanied by an adult.
| A．once | B．when | C．if | D．unless |
__________ the students, the teacher came into the room smiling.
| A．To follow | B．Follow | C．Following | D．Followed |
.I have told you the truth. ______ I keep repeating it?
A Must B Can C May D Will