10. The soil can a__________(吸收) water, so it helps to keep water from flowing away.

9. As the water supply is d_________(下降), water prices are expected to keep increasing.

8. Oil has a density lower than 1,000kg/m3, so it will f______(漂浮) on water.

7. ---- He’s only fourteen.

　 ---- I know, but I think we can t_________(信任) him to look after the baby for an hour.

6. A n________ is a place where young children are taken care of during the day while their parents are at work.

5. The shirt is 100% p___________ cotton, that is, not mixed with any other material.

4. Alcohol(酒精) has a lower f_________ point than water. That’s why the wine can stay liquid on such cold weather.

3. Life in the oceans appears in different sizes, r__________ from the tiniest fish all the way up to the biggest blue whales.

2. People in the small island didn’t use cars; horses were the only means of t_______(运输).

1. She dropped a c________(块)of sugar into her tea and stirred(搅拌) it with a spoon.