Do you know ________
| A．how many populations there are in the world |
| B．how much population there is in the world |
| C．how many the population of the world is |
| D．what the population of the world is |
－I've studied gardening as a hobby. Could I make some suggestions?
－________.
| A．You will make it |
| B．Go right ahead |
| C．Don't mention it |
| D．Take it easy |
The pianos in the other shop will be______，but______.
| A．cheaper；not as better |
| B．more cheap；not as better |
| C．cheaper；not as good |
| D．more cheap；not as good |
From facts，scientists have ________that more energy is being absorbed from the sun，throwing the earth's energy “out of balance”．
| A．confirmed |
| B．concluded |
| C．concentrated |
| D．centered |
A number of students ________the exam so far，but the number of the students who failed ________great.
| A．passed；were |
| B．has passed；are |
| C．have passed；is |
| D．have passed；are |
The traditional ____________to dealing with complex problems is to break them down into smaller，more easily managed problems.
| A．approach |
| B．concept |
| C．belief |
| D．wisdom |