8. Most of us would rather send e-mail as it has____of the troubles of sending letters via the post office.
| A．nothing | B．none | C．some | D．Either |
We need an effective strategy to help children living in ________ poverty to have the opportunity to receive ________ good education.
| A．/；a | B．a；/ |
| C．/；the | D．the；a |
—What does PM2.5 mean?
—It's a professional ________ indicating the condition of air pollution.
| A．term | B．item |
| C．number | D．mark |
Some students think they enjoy reading just out of interest, but others argue that a better score is their main ________.
| A．recognition | B．attraction |
| C．occupation | D．motivation |
Currently, many American women are still faced with the ________ of choosing between work and family commitments.
| A．desperation | B．confusion |
| C．dilemma | D．concern |
After ________ careful consideration, they finally decided that each child will be offered ________ university education.
| A．the; a | B．不填；an |
| C．a; an | D．不填；a |