读长江流域水灾直接经济损失年际变化图，回答31～32题。
从图中看，长江流域1950～1990年间水灾直接经济损失最严重的两次是( )
| A．1954年、1999年 | B．1989年、1999年 | C．1954年、1983年 | D．1967年、1971年 |
这两次水灾都是( )
| A．集中性暴雨所致 | B．下游排水不畅所致 | C．上游水土流失所致 | D．中游围湖造田所致 |
Whenever I met him, _____ was fairly often, I like his sweet and hopeful smile.
| A．what | B．that | C．which | D．when |
All of us still remember the terrible earthquake that Tangshan twenty years ago.
| A．attacked | B．struck |
| C．knocked | D．exploded |
The College Entrance Examination near, so you should be prepared for it.
| A．is drawing | B．draws |
| C．drew | D．has drawn |
— What is that building?
— _____ the garden equipment is stored.
| A．There is in which | B．That is where |
| C．The building that | D．That I got |
— Is he said ____ his car lost?
— Yes. He was so foolish ____ leave his car ____.
| A．that…that…unlock |
| B．to have had…as to…unlocked |
| C．to have…to…unlock |
| D．to have…for him to…unlocked |