New words：

attempt [əˈtempt]
n.尝试；试图；企图
v.尝试；试图；努力

Sample Sentences：

I passed my driving test at the first attempt.
Don’t be afraid of failure—every attempt is a learning experience.

I will attempt to answer all your questions.
She attempted to solve the math problem but failed.

New words：

heal [hiːl] v. 治愈；愈合；(使)康复，复原

Sample Sentences：

It took a long time for the wounds to heal.
I put a bandage on the scratch to help it heal.
Plants can heal themselves after being damaged by insects.

New words：

raw [rɔː] adj. 生的；未烹制的；未煮的；未经加工的

Sample Sentences：

These fish are often eaten raw.
Are raw vegetables healthier than cooked?
This information is only raw data and will need further analysis.

New words：

liver[ˈlɪvər] n. 肝

Sample Sentences：

Eating too much junk food is bad for your liver.
We don't serve liver often because so many people dislike it.
The liver is an important organ in our body that helps clean the blood.

New words：

organ [ˈɔrɡən] n. 机关；风琴；管风琴；（人体或动植物的）器官

Sample Sentences：

There are many organs in a man's body.
The largest organ in the body is the liver.
He taught the piano, organ and composition.
The government set up a special organ to help poor families.

liver[ˈlɪvər] n. 肝