New Words：

zip wire 滑索
pulley ['puli] n. 滑车, 滑轮, 皮带轮

Sample Sentences：

Have you tried the zip wire before?
What do you do with a zip wire?
You slide down the rope with the help of a pulley.
A pulley is made from wheels and rope. With the pulley, we can pull things easily.

New Words：

slip [slip] v. 溜；滑倒；滑脱；溜走

Sample Sentences：

The fish slipped out of my hand.
The student slipped out of the classroom.
I grabbed him, but he slipped from my grasp.
He caught the ball, then it slipped through his fingers.

New Words：

grasp [grɑ:sp]
v.抓住；理解；领会；抓紧
n.紧抓；紧握；控制；领会

Sample Sentences：

The little girl grasped her mother's arm.
Grasp my hand and I'll pull you over the wall.

They have a good grasp of foreign languages.
He let the ball slip through his grasp and into the net.

slip [slip] v. 溜；滑倒；滑脱；溜走

New Words：

opportunity [ˌɔpəˈtjuːnəti] n. 机会；时机

Sample Sentences：

You must grasp this opportunity.
It's a pity he missed the opportunity to travel abroad.
You'll have the opportunity to ask any questions at the end.
I'd like to take this opportunity to thank my classmates for their support.

grasp [grɑ:sp]
n.把握, 领会, 抓紧
vt.领会, 抓住, 紧握

New Words：

exhibit [ig'zibit]
v.展览, 陈列, 展示, 表现
n.展览品，陈列品

Sample Sentences：

Do not touch the exhibits.
She exhibited her paintings at our school.
She exhibited no fear in the face of danger.
Next week those goods will exhibit in that shop.