（37）chance n. /opportunity n. /advantage n. /fortune n.

chance着重指偶然或意外的可能，有时也指“好机会”，这时可用“opportunity”替代；opportunity着重指“好机会”，带有“适逢其时、正好便于行事”之意；advantage指有利的条件或优势；fortune指人“交好运气”，有一定迷信的色彩。

例：There is a chance that I will see him these days.
这几天我有可能见到他。

The 2008 Olympic Games will bring us many opportunities and challenges.
2008年奥运会将给我们带来许多机遇和挑战。

It is to your advantage to invest wisely.
明智地投资对你很有利。

It is also believed that fireworks will bring good fortune in the coming year.
据说放鞭炮还能为人们在新的一年里带来好运气。m

（38）breed v. /feed v.

breed意为“养殖，培育，繁殖，教养”；feed意为“喂养，饲养”。

例：Some animals will not breed when kept in cages.
有些动物关在笼子里就会很难繁殖。

Many farmers breed cows and sheep.
许多农民养牛和羊。

She was feeding the baby with porridge.
她正用粥喂自己的宝宝。

The cows were feeding quietly in the meadows.
牛群在草地上静静地吃草。

（39）burden n. /load n.

burden意为“负担，包袱，担子”，多为贬义；load意为“装载物，负荷，工作量”，也可指“思想上的负担，压力”。

例：They don’t want to add to the government’s burden.
他们不想给政府添包袱。

He was faced with the severe financial burden.
他面临着严重的财政负担。

The bridge has been built to support very heavy load.
建这座桥是为了使重载车也能通过。

The load on her mind grew lighter.
她的思想负担轻了许多。

（40）campaign n. /champion n.

这两个词词形与发音相近，容易弄混。campaign意为“（竞选）运动，战役”；champion意为“冠军”。

例：The Germans were defeated in the campaign in North Africa.
德国人在北非战役中打了败仗。

The Party suggested a renewed campaign to raise production and practise economy.
该党建议发起新的一轮运动来提高生产，发展经济。

The champion issued a challenge to all other boxers to fight him.
拳击冠军向所有其他拳击手发出挑战。