懂你英语核心课levelunit

L2-U3-1/4l i s t e n i n g

Bus schedule 1 / about Earth

A

1.Here is a bus schedule at a bus stop.

2.It has schedule for three buses between eight and nine thirty in the

morning.

3.Bus No. 38 has a regular schedule.

4.It comes every fifteen minutes .

5.Eight ten, Eight twenty-five, eight forty, eight fifty-five, nine ten,

night twenty-five.

6.Bus No. forty-seven comes less often.

7.It comes at eight twenty, eight forty-five, nine twenty-five.

8.Bus No. sixty is the earliest bus.

9.It comes at eight o-five, eight thirty, and nine o’c lock.

10.Bus No. thirty-eight has stops at the main train station and the

airport.

11.Bus No. sixty stops at the main train station, but does go to the

airport.

12.Bus No. forty-seven doesn’t go to either the main train station or

the airport.

B

1.This is our planet earth.

2.It has shape of a sphere, like a ball.

3.The equator(地球的赤道) device the earth into two halves equator.

4.The northern half is the northern hemisphere(半球体).

5.The southern half is the southern hemisphere.

6.Europe and Asia are both in the northern hemisphere.

7.Australia and a third of Africa are in the southern hemisphere.

C

1.The earth moves in two ways.

2.First, it’s been and rotates.

3.It’s rotates around its axis.

4.The axis is a line through its center.

5.It takes the earth twenty-four hours to complete a rotation.

6.That is the length of one day.

D

1.Second, the earth travels around the sun.

2.It takes about three hundred sixty-five days for the earth to go around

the sun.

3.That is the length of one year.

4.It’s average speed during the year is about thirty kilometers per

second.

E

1.The earth’s axis is not perpendicular to the sun.

2.The earth’s axis is tilted.

3.It is tilted at an angle of around twenty-three point five degrees.

4.This tilt causes the seasons of the year.

F

1.During part of the year, northern hemisphere is tilted toward the sun.

2.When the northern hemisphere is tilted toward the sun, its summer.

3.When the northern hemisphere is tilted away from the sun, its winter.

4.This is why the seasons are opposite for the northern and southern

hemispheres.

5.When it’s summer in Australia, it’s winter in Europe.

G

1.What would happen if the earth’s tilt were different than it is now.

2.If the earth tilts were larger, summer would be hotter.

3.If the earth tilts were smaller, summers would be cooler.

4.If the earth had no tilt at all, there would be no seasons.

5.Therefore, the angle of the tilt is very important for life on earth.