The bad weather meant_________ the rocket launch for 48 hours.
| A．delaying | B．delayed |
| C．to delay | D．having delayed |
The medicine bought at a high price turned out to have no _____.
| A．influence | B．result | C．effect | D．risk |
Please tell me how global warming _____. I am still in the dark.
| A．came by | B．came out | C．came to | D．came about |
It is high time that we ____ the amount of carbon dioxide in our daily life.
A. reduce B reduced C will reduce D reduces
It rained that day and ___ the baseball game was called off.
| A．however | B．still | C．so | D．consequently |
It is not until the disease has progressed to AIDS ____a person begins to look sick.
| A．who | B．that | C．where | D．before |