As there is less and less coal and oil, scientists are exploring new ways of making use of ______ energy, such as sunlight, wind and water for power and fuel.
| A．primary | B．alternative | C．instant | D．unique |
Encourage your children to try new things，but try not tothem too hard．
| A．draw | B．strike | C．rush | D．push |
Nearly half a million immigrants，many of them English—speaking，in the country during the last quarter of the nineteenth century．
| A．have arrived | B．had arrived |
| C．arrived | D．have been arriving |
In spite of allhas been said，quite a lot of people are still uncertain about the prices of housing in China．
| A．that | B．what | C．which | D．as |
Nowadays，skiing，being a sport, has become a big industry and a notable feature of leisure culture．
| A．except for | B．apart from | C．far from | D．due to |
一I heard that you got an A in the chemistry exam．Well done!
一Thanks，I know that youa good job as well．
| A．shouId have done | B．need have done |
| C．must have done | D．could have done |