一、A Trip to Yosemite Park 1

生词：

Yosemite美 [joʊˈsɛmɪti]  
n.约塞米蒂国家公园（位于美国加利福尼亚州中部）

drive out of
驶出

San Francisco
英 [sæn fræn'sɪskəʊ]   美 [sæn fræn'sɪskoʊ]  
n.旧金山

commute
英 [kəˈmjuːt]   美 [kəˈmjuːt]  
v.(乘公共汽车、火车、汽车等)上下班往返，经常往返(于两地);减刑;代偿
n.上下班路程

pancake
英 [ˈpænkeɪk]   美 [ˈpænkeɪk]  
n.烙饼;薄饼;(尤指舞台化妆用的)粉饼
vi.使平坠著陆;使平展平坠着陆;平展

Today, Christina and her friend are enjoying themselves.
This morning they got up very early and drove out of San Francisco.
They crossed the Bay Bridge before the early morning commute and drove south.
Because it was so early, there were almost no cars.

After driving for an hour and a half, they stopped and had breakfast.
They ordered pancakes and coffee.
They also had some fresh fruit.
When they finished eating, it was 7 o'clock.

Then they got back into the car and drove south.
Christina wanted to listen to music, so they turned on the radio.
An hour later they stopped for gas.
They noticed that there was also a charging station for electric cars.

It's now 1:15 and they are in Yosemite Park
They have been there for two hours, since 11:15.
They are looking at Yosemite falls, which is the highest waterfall in the Park.
The water drops a total of 740 meters from the top of the upper fall to the base of the lower fall.

二、A Trip to Yosemite Park2

In another 15 minutes, they plan to eat lunch at a magnificent old hotel in the park.
It was built in 1927 and has a great view.
They wanted to stay there, but they couldn't get reservations.
To get a room at that hotel, you usually need to make reservations several months in advance.

They plan to stay in the park until around 4 o'clock .
By then they will have been in the park for nearly 5 hours.
Then they'll get back into the car and drive back to San Francisco.
They plan to eat dinner somewhere along the way.
If the traffic isn't too bad, they should be back in San Francisco by 10 o'clock.

Early tomorrow morning they are going to cross the Golden Gate Bridge and go north along the coast.
From some places you can look out on the ocean and see whales and other sea life.
Christina has never seen a whale before, so she's looking forward to it.
And tomorrow night they have something special planned.
They are going to watch a baseball game.
Christina has never seen a baseball game, but she has heard that it is very popular in the US.
And the San Francisco baseball team is one of the best.

三、Science

生词：

orbit
英 [ˈɔːbɪt]   美 [ˈɔːrbɪt]  
n.(天体等运行的)轨道;(人、组织等的)影响范围，势力范围
v.沿轨道运行;围绕…运动

layer
英 [ˈleɪə(r)]   美 [ler]  
n.层;表层;层次;阶层
v.把…分层堆放
    
Atoms
英 [ˈætəmz]   美 [ˈætəmz]  
原子;原子论;原子公式;原子数;原词
    
nucleus
英 [ˈnjuːkliəs]   美 [ˈnuːkliəs]  
n.核;原子核;细胞核;核心;中心
    
block
英 [blɒk]   美 [blɑːk]  
n.(方形平面)大块;立方体;(公寓、办公、教学、医院等)大楼;(成组建筑中的)一栋楼房;四面临街的一方块楼群;街区
v.堵塞;阻塞;堵住(某人的路等);挡住(某人的视线等);妨碍;阻碍

electron
英 [ɪˈlektrɒn]  美 [ɪˈlektrɑːn]  
n.电子
    
negative
英 [ˈneɡətɪv]   美 [ˈneɡətɪv]  
adj.坏的;有害的;消极的;负面的;缺乏热情的;否定的
n.否定词;否定;拒绝;底片;负片;属阴性(或否定)的结果
v.拒绝;否定;否定…的真实性;证伪
    
Asteroids
英 [ˈæstərɔɪdz]   美 [ˈæstəˌrɔɪdz]  
爆破慧星;小行星;爆破彗星;二分图;行星

comet
英 [ˈkɒmɪt]   美 [ˈkɑːmɪt]  
n.彗星;扫帚星
    
obey
英 [əˈbeɪ]   美 [əˈbeɪ]  
v.服从;遵守;顺从

layer
英 [ˈleɪə(r)]   美 [ler]  
n.层;表层;层次;阶层
v.把…分层堆放

nitrogen
英 [ˈnaɪtrədʒən]   美 [ˈnaɪtrədʒən]  
n.氮;氮气

A force is a push or a pull on an object.
A force changes the motion of a moving object.
A force can be strong or weak and it always has a direction.

The earth is a planet that goes around the sun in a circular orbit.
The speed of its motion doesn't change, but the direction of its motion does.
The earth has a layer of gas above its surface, which helps to support life.
Atoms are the building blocks of matter.

At the center of an atom is its nucleus, which has a positive electric charge.
Outside the nucleus are electrons, which have a negative charge.
Asteroids and comets, are objects that obey our sun, but are smaller than planets.
Asteroids that pass closed to the Earth are called near-earth objects.
The layer of gases just above Earth's surface is our atmosphere.
The atmosphere is made up of gases, such as oxygen and nitrogen.

Without an atmosphere, there would be no life on Earth.
A force can increase or decrease the speed of an object, and it can change the direction of motion.
If they collide with Earth they could cause an extinction event.
The electric force between the nucleus and the electrons holds the atom together.

四、Geometry

生词：

geometry
英 [dʒiˈɒmətri]   美 [dʒiˈɑːmətri]  
n.几何(学);几何形状;几何图形;几何结构

intersect
英 [ˌɪntəˈsekt]   美 [ˌɪntərˈsekt]  
v.相交;交叉;横穿;贯穿;横断

parallel
英 [ˈpærəlel]   美 [ˈpærəlel]  
adj.平行的;极相似的;同时发生的;相应的;对应的;并行的
n.(尤指不同地点或时间的)极其相似的人(或情况、事件等);相似特征;相似特点;(地球或地图的)纬线，纬圈
v.与…相似;与…同时发生;与…媲美;比得上
adv.平行地，并列地

adjacent
英 [əˈdʒeɪsnt]   美 [əˈdʒeɪsnt]  
adj.与…毗连的;邻近的

perpendicular
英 [ˌpɜːpənˈdɪkjələ(r)]   美 [ˌpɜːrpənˈdɪkjələr]  
adj.垂直的;成直角的;垂直式的(英国14、15世纪盛行的建筑风格，以使用垂直线和大拱为特征)
n.垂直线(或位置、方向)

dimensional
英 [daɪˈmenʃənl]   美 [daɪˈmenʃənl]  
adj.空间的；尺寸的

sphere
英 [sfɪə(r)]   美 [sfɪr]  
n.球;球体;球形;圆球;球状物;范围;领域;阶层;界
vt.形成球体;包围;围绕;置于球面内部

figure
英 [ˈfɪɡə(r)]   美 [ˈfɪɡjər]  
n.(代表数量，尤指官方资料中的)数字;数字符号;字码;位数;算术
v.是重要部分;是…的部分;认为，认定(某事将发生或属实);计算(数量或成本)

circumference
英 [səˈkʌmfərəns]   美 [sərˈkʌmfərəns]  
n.圆周;圆周长

diameter
英 [daɪˈæmɪtə(r)]   美 [daɪˈæmɪtər]  
n.直径;对径;放大率;放大倍数

volume
英 [ˈvɒljuːm]   美 [ˈvɑːljuːm]  
n.体积;容积;容量;量;额;音量;响度

cube
英 [kjuːb]   美 [kjuːb]  
n.立方体;立方形;立方形的东西(尤指食物);立方;三次幂
v.求…的立方;把(食物)切成小方块

equidistant
英 [ˌiːkwɪˈdɪstənt]   美 [ˌiːkwɪˈdɪstənt]  
adj.等距离;等距

The two lines on the left intersect each other at a right angle, which is 90 degrees.
The two lines on the right are parallel, which means they never cross.

The adjacent sides of a rectangle are perpendicular, which means they meet at a 90 degree angle.
The opposite sides of a rectangle are equal and parallel, which means they never cross.

The area of a rectangle is the length times the width.
A circle is a two dimensional figure with a radius and circumference, which is the distance around the circle.

The area of a circle is PI R squared, where R is the radius and PI is the ratio of a circle's circumference to its diameter.

A sphere is a three dimensional figure with a radius and a volume, which is 4/3 PI R cubed.
All points on the surface of a sphere are equidistant from its center.

A right triangle is a two dimensional figure with 3 sides, two of which are perpendicular.
To find its area, multiply the length of the two perpendicular sides, A & B, and divided by two, A equals one half A B.

A rectangle is a two dimensional figure with 4 sides
Pi is the ratio of a circle’s circumference to its diameter.

五、Dinner Conversation

Have you finished eating yet?
No, I haven't.
Why are you in such a hurry?
I'm sorry, but you're such a slow eater.
A slow eater?
Well, I'm trying to enjoy my food.
You just eat and swallow.

I don't see how you can even taste it!
OK, I'm sorry.
Do you mind if I get another glass of wine?
No, go ahead.
I don't want you to sit there putting pressure on me.
I thought we were going to have a relaxing evening.

Yes, you're right.
I'd like to relax, but I have a lot on my mind.
Work related?
Yes, it is.
I've been getting some strange emails from my boss.
He wants me to cut down on my expenses.
Maybe he wants to fire me.

Is business bad?
Yes, it is. But I don't want to talk about it.
OK, but I'm a good listener.
You can tell me if you'd like to.

Thanks. Maybe some other time.
I'll try to stop thinking about it and deal with it tomorrow.
Good idea.
You need to take a break from work.
Your health is important, and so am I.
Yes, you are.
I don't know what I would do without you.