New Words：

poisonous [ˈpɔɪzənəs] adj.引起中毒的；有毒的；分泌毒素的；能毒伤人的
insect [ˈɪnsekt] n. 昆虫；虫子

Sample Sentences：

This gas is highly poisonous.
A lot of poisonous waste water comes from that chemical factory.

Birds and insects are natural enemies.
There is an insect crawling up your back.

natural [ˈnætʃrəl] adj.自然的；天然的；天生的；本能的

New Words：

dragonfly [ˈdræɡənflaɪ] n. 蜻蜓
mushroom [ˈmʌʃrʊm] n. 蘑菇

Sample Sentences：

A giant dragonfly was sitting on my bed.
The dragonfly feeds on mosquitoes and flies.

There are many types of wild mushrooms.
Some mushrooms are good to eat; some are poisonous.

poisonous [ˈpɔɪzənəs] adj.引起中毒的；有毒的；分泌毒素的；能毒伤人的

New Words：

prefer [prɪˈfɜːr] v. 较喜欢；更喜欢；宁愿；宁可

prefer doing sth to doing sth 喜欢（做）…胜过（做）…/比起（做）…，更喜欢（做）…

Sample Sentences：

I much prefer cats to dogs.
Which one do you prefer, an apple or an orange?
I prefer staying at home to going out in such a cold day.

New Words：

bumper [ˈbʌmpər] n.（汽车头尾的）保险杠

Sample Sentences：

I want to ride in the bumper cars.
There is a hole in the bumper of my car.
The cars were bumper to bumper on the road to the coast.

New Words：

bump [bʌmp] v.碰；撞
bump into 偶然碰到；遇见；(意外)撞到

Sample Sentences：

She bumped her head against a tree.
You could fall off the bed and bump your head!

In the dark I bumped into a chair.
I am really so sorry to bump into you.
I often bump into him at the supermarket.