Some of this heat near the earth’s surface _________ make electricity.
| A．is used for | B．is used to | C．gets used to | D．used to |
When you meet new words while reading, you can _______your dictionary.
| A．infer from | B．look up |
| C．look into | D．refer to |
If your baby has a fever, you should take him to see a doctor_______.
| A．completely | B．immediately |
| C．similarly | D．seriously |
-- How do you want to post it?
-- It is only printed matter; ______mail is OK
| A．general | B．ordinary |
| C．necessary | D．partial |
The accident was really unexpected I did try to avoid _______ the car in front of mine, but I failed
| A．to hit | B．to have hit |
| C．having hit | D．hitting |
We Chinese are proud _______our great success _______the area of science and technology.
| A．of; in | B．for ;on |
| C．of; on | D．form |