Too high house prices can be brought under control，________ the authorities introduce a series of regulatory policies．
| A．even if | B．as if | C．so that | D．provided that |
31. Graham was not a little _____ because he drank too much last night.
| A．tired | B．tiring | C．angry | D．Drunk |
30. He is badly down these days. This sentence probably means _____.
| A．He is seriously ill these days. | B．He is in low spirit these days. |
| C．He fell down and was seriously hurt. | D．He didn’t study hard these days. |
29. What a delicious joke! This sentence means _____.
| A．The joke is very interesting. | B．The joke is about delicious food. |
| C．The joke is not interesting at all. | D．No one laughed at the joke. |
28. We have to set a definite date for the concert. The underlined word means _____.
| A．fixed | B．clear | C．sure | D．Certain |
27. This instant dictionary(快译通) is too _____. He can’t afford it, to say nothing of a portable computer (手提电脑).
| A．dearly | B．expensive | C．costly | D．High |