When to a certain temperature,water can be turned into steam.
| A．heating |
| B．being heated |
| C．heated |
| D．to heat |
The little girl is walking along the beach, happy and joyful, ______ bending down to pick up a beautiful seashell.
A approximately B. regularly
C. obviouslyD. occasionally
Finding information in today’s world is easy. The ______ is how you can tell if the information you get is useful or not.
| A．knowledge | B．ability |
| C．competition | D．challenge |
You should book a train ticket_____ if you want to go home in time before the Spring Festival.
| A．in return | B．in advance |
| C．in place | D．in order |
A number of graduates prefer to work in big cities , where there are lots of _______, like convenient transportation , more opportunities and better environment.
| A．amusements | B．attractions |
| C．collections | D．achievements |
They are said to have developed a new ______ to teaching ,_______ is bound to improve classroom teaching greatly.
| A．approach; which | B．approach; that |
| C．means; which | D．means; that |