As we all know, the ocean moves. But waves breaking on the beach make the ocean fun. When you stand on the shore and look at the waves, it seems like the water is moving towards you. But the water is not really moving forward. The moving you see is wave energy. And wave energy comes from the wind.

Let’s think about how this works. As wave energy passes through the water, the energy makes particles （粒子） of water move up and down. Just give you an example of a wave passing under a basketball. We put a basketball on the sea. When the wind blows, a wave comes from behind the basketball. The basketball moves up to the top with the wave. Then the wave continues and leaves the basketball behind. The basketball looks lower, but it doesn’t move forward. That’s because the wave energy just moves the water which is under the basketball.

　  So why can you see a wave knock you down on the shore？When a wave moves toward the shore, the bottom of the wave slows down because it meets the ocean floor. But the top, which is called crest(浪峰), keeps moving. The different action causes the wave to fall over or break onto the shore. If a wave is very large, it carries a lot of energy when it hits the land. As time goes by, waves can break up and carry away the rocks and other things on the shore. Shorelines are changing all the time because of wave action.

1.______ is really moving forward when you look at the wave.

A．Water            B．The basketball      C．Water and wave energy   D．Wave energy

2.Match the sentences with the pictures and the right answer.

(1) The basketball moves up to the top with the wave.

(2) The basketball continues and leaves the basketball behind.

(3) When the wind blows, a wave comes from behind the basketball.

A．a—(2) b—(1) c—(3)                     B．a—(3) b—(1) c—(2)

C．a—(1) b—(3) c—(2)                     D．a—(3) b—(2) c—(1)

3.Which of the following is NOT true according to the passage?

A．Wave energy comes from the water.

B．Large waves carry plenty of energy.

C．Wave action makes shorelines change all the time.

D．The bottom of the wave is easy to slow down.

4.The underlined word “it” ( Paragraph 3) refers to “________”.

A．particles of water   B．the shore          C．the wind          D．the bottom of the wave

5.The main idea of this passage is ______.

A．what makes particles of water move         B．how a basketball moves on the ocean

C．how wave energy causes wave action        D．why a wave can knock you down

These amazing animals prove that love lives on four legs.

A little girl's lifeline

Three-year-old Alida Knobloch and her 27kg golden dog, Mr. Gibbs, are almost together all the time There is a special love between them. Alida, who suffered from serious lung disease (肺病) when she was 10 months old, is unable to breathe on her own for about 45 minutes. So Mr. Gibbs has been with her everywhere, carrying 4.5kg of oxygen tanks (氧气罐) for her .

A pig that calms kids

When Lois Brady, a famous doctor in America, visits special-needs students in San Francisco schools, she often brings along Buttercup, a black pig from Vietnam. The pig is very calm and friendly and has been trained to offer comfort (安慰) to patients as well.

A Lion's big heart

With paws (爪子) the size of dinner plates, bright black eyes and a golden mane (鬃), Jupiter, a 13-year-old 250kg lion, was brought to the rescue (援救) center by Anna. In the past two years, Anna has developed a very close relationship with Jupiter.

1.The best title to explain the main idea of the text is “_________”

A. Hero pets B Small pets

C. Kids' friends D Special visits

2.Which of the following do you think is the right match?

A. Alida →a lion B. Buttercup →a pig

C. Lois →a sick girl D. Jupiter → a doctor

3.How long has Mr,Gibbs been with Alida?

A. For about 45 minutes B. For about 10 months

C. For over 3 years D. For over 2 years

4.In which of the following pictures can you find Anna?

5.Which of the sentences is Not true according to the passage?

A. Alida has suffered from serious lung disease since she was 10 months old

B. The black pig can calm the kids and offer comfort to them.

C. Mr. Gibbs is a loyal(忠诚的) dog which loves its owner.

D. Anna brought Jupiter to the rescue center for fun.