听说
1.Christina has never seen a baseball game, but she has heard that it is very popular in the US.（86）
2.A rectangle is a two dimensional figure with 4 sides.(88)
3.A burn is an injury to the skin caused by fire or heat.(82)
4. They have been there for two hours, since 11:15.(84)
5.This is the first vacation she has had for a long time.(80)
6.And tomorrow night they have something special planned.
7.They are looking at Yosemite Falls, which is the highest waterfall in the park. (87)
8.They wanted to stay there, but they couldn't get reservations. (88)
9.A force changes the motion of a moving object. (88)
10.Many early cities were built alongside rivers. (84)
11.Have you finished eating yet?（76）
12.Today Christina and her friends enjoy themselves. (83)
13.They planned to stay in the park until around 4 o'clock. (85)
14.They planned to eat dinner somewhere along the way.（93）
15.A force is a push or a pull on an object. (82)
16.The area of the rectangle is the length times width. (82)
17.Pi is ratio of circle's circumstances to its diameter.(70)
18.These two lines are parallel, which means they never cross.
10.The ocean are also an important source of oxygen.(83)
11.When they finished eating, it was 7 o'clock.(90)
12.His company failed after only a few months.(87)
13.Hills are like mountains, but not as tall.(81)
14.A sore throat can be caused by viruses or bacteria.(48)
15.Have you finished eating yet?(76)
16.I'm sorry, but you are such a slow eater.(77)
看说
1.From some places, you can look out on the ocean and see whales and other sea life.
2.The Earth is a plant that goes around the sun in a circular orbit.（78）
3.The two lines on the right are parallel, which means they never cross.
4.All points on the surface of a sphere are equivalent from its center.(71)
5.If they collide with Earth they could cause an extinction event.(78)
6.From some places, you can look out on the ocean and see whales and other sea life.
7.The water drops a total of 740 meters from the top of the upper fall to the base of the lower fall.
8.They noticed that there was also a charging station for electric cars.(73)
9.The layer of gases just above Earth's surface is our atmosphere.
10.If they collide with Earth they could cause an extinction event.
11.I don't know what I would do without you.
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