五、完形填空
What do birds build their nests (巢) mainly with? Of course it is the tree sticks and dry grass. But recently a new study reported that many birds are building their nests with ____1____, including cigarette butts (烟头) and plastic bags.
A group of scientists looked into about 35 000 bird nests. The finding is surprising as well as worrying. They found that birds almost everywhere on earth are ____2____ man - made things in nests.
To our surprise, some rubbish seems to be a little bit ____3____. That is why birds "like" putting it in their nests. For example, cigarette butts have some special chemicals (化学物质). And the chemicals can ____4____ the baby birds by keeping insects away. Plastic bags are useful in keeping the baby birds warm in winter, and other hard things, such as paper cards, can make nests ____5____.
In the end, ____6____, human rubbish may only bring more harm (伤害) to birds. The chemicals in cigarettes may hurt the baby birds. They may get sick more ____7____ or have shorter lives.
To make things ____8____, if the baby birds eat the rubbish by mistake, they will be choked (窒息). If the cigarette still burns (燃烧) when the bird brings it back to its home, it may put the nest in ____9____. Our friends in the air are hurt because of the pollution we humans produce. As students, what do you think we can do to ____10____ the situation (情况)? I'm looking forward to your thoughts.
(
C
) 1. A. silk B. wood C. rubbish D. cloth
(
B
) 2. A. checking B. using C. wasting D. producing
(
B
) 3. A. colourful B. helpful C. popular D. cheerful
(
C
) 4. A. feed B. teach C. protect D. face
(
A
) 5. A. stronger B. heavier C. larger D. cheaper
(
D
) 6. A. besides B. instead C. moreover D. however
(
A
) 7. A. easily B. nearly C. carefully D. correctly
(
D
) 8. A. better B. good C. bad D. worse
(
D
) 9. A. safety B. need C. luck D. danger
(
B
) 10. A. develop B. improve C. suggest D. predict
