Life began in the ocean(海洋). They are home to about two million species(物種), from the largest animal that has ever lived on the Earth to the smallest one. New species are found all the time, as scientists say that 91%of ocean species have yet to be found or described.

Covering 71% of the Earth, oceans have shaped humans' history, culture and lives, and keep doing so. They are a life-support system(系統(tǒng))for the Earth and they provide us with free goods, from the food we eat to more than half of the oxygen(氧氣)we breathe every day. Because of oceans, there is rain and snow, and oceans feed more than 1,000,000,000 people with the animal protein(蛋白質(zhì)).

The oceans also influence the weather and the temperature, deciding rainfall, droughts(干旱) and floods. WWF works hard on the safety of the oceans and the health of the wildlife in the oceans. They hope more people can join them to take action to protect the oceans.

1.About species live in the oceans.

A.two thousand B.two billion C.two million D.one million

2.The underlined word "shaped" probably means in Chinese here.

A.塑造 B.改變 C.成為 D.打破

3.WWF tries hard to .

A.protect humans by studying the wildlife in the oceans

B.find out all new kinds of species living in the oceans

C.look for humans' history and culture about oceans

D.protect oceans and the wildlife living in the oceans

4.Which of the following don’t the oceans provide us with?

A.Humans' history, culture and lives. B.The food we eat.

C.More than half of the oxygen(氧氣)we breathe every day D.The animal protein.

5.The writer writes this passage to .

A.tell people more about WWF's ocean work

B.ask more people to learn the knowledge about oceans

C.encourage people to change oceans into living places

D.ask people to take action to protect the oceans and ocean species

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