Celebrating Valentine’s Day came into __________ fashion many years ago in China, and flower shops can sell dozens of roses __________.
| A．a; at a time | B．/; at a time |
| C．/; at one time | D．the; at times |
33．A big earthquake struck southern Haiti，knocking down buildings and power lines and causing__________ Its ambassador to the United States called a catastrophe．
| A．what | B．which | C．what | D．Why |
32．Misunderstandings_____from lack of social communication，unless properly，may lead to serious problems．
| A．arisen；handling | B．arising；handled | C．rising；handled | D．risen；handling |
30．They can’t afford to buy the latest equipment at present．_______，they keep trying new ways to improve efficiency．
| A．On the contrary | B．In contrast | C．Nevertheless | D．Furthermore |
29．The young man，who by thenadmission to university，decided to do some part-time jobs to gain more practical experience．
| A．gained | B．was gaining | C．has gained | D．had gained |
28．—Now some parents deny_______to their children，and have become their slaves．
—But this problem does not cause concern of the whole society．
| A．nothing | B．everything | C．something | D．Anything |