New words：

promotion [prəˈmoʊʃ(ə)n] n.促进；提升；推广；晋升

Sample Sentences：

Why are you so jealous of David's promotion?
I will get a promotion and earn a lot of money.
She got a promotion after working hard for three years as a manager.

New words：

promote [prəˈmoʊt] v.促进；推动；提升；提拔；晋升

Sample Sentences：

She worked hard and was soon promoted.
The area is being promoted as a tourist destination.
You don't have to sacrifice environmental protection to promote economic growth.

sacrifice [ˈsækrɪˌfaɪs] v.牺牲；献出；

New words：

hybrid [ˈhaɪbrɪd]
n.杂种；杂种动物；杂交植物；（不同事物的）混合物
adj.杂种的；混合的；混合语的

Sample Sentences：

Yuan is known as the Father of Hybrid Rice.
Hybrid rice is a stronger plant, unlike ordinary rice.
A mule is a hybrid of a male donkey and a female horse.
Hybrid cars are powered by two engines: one petrol, one electric.

New words：

determination [dɪˌtɜrmɪˈneɪʃ(ə)n] n.测定；确定；决心；

Sample Sentences：

She never wavered in her determination to succeed.
He fought the illness with courage and determination.
Everyone admires her strength of character and determination.

New words：

determine [dɪˈtɜrmɪn] v.确定；决定；决心；下决心；
be determined to 决定;下决心

Sample Sentences：

They determined to get up early.
She was determined to prove everyone wrong.
The sale of ice cream is partly determined by the weather.
People generally believe that a person's IQ is determined by birth.