Question

【題目】 A sea turtle climbed out of the ocean. It was just before midnight. It arrived to lay eggs.

Sea turtles have been doing this for 200 million years. Sea turtles lived at the time as the dinosaurs.

The sea turtle had to survive plastic rubbish, fish nets and oil spills to get here. There is another danger. The Earth has been getting warmer. This makes the sand hot. Warm sand makes the turtle eggs hatch (孵化) as females (雌性).

This is a problem. Female sea turtles are very important because they lay eggs. But male turtles are also needed to help make babies. Without enough males, sea turtles could die out.

Every year, sea turtles swim to Cape Verde. It is a country in West Africa. About 30000 sea turtles nest (筑巢) there. This is one-sixth of all of Earth’s nesting sea turtles.

Scientists from Great Britain studied the turtles there. They found 21 out of 25 young turtles were females.

“Males here will die out in 20 to 30 years.” said Adolfo Marco Llorente. He is studying the turtles on Boa Vista. It is one of Cape Verde’s island. Without males, the turtles cannot have more babies.

Businesses on Cape Verde are worried. Tourists come to see the sea turtles. The tourists buy local things like pottery. They would lose money if turtles died out.

Scientists have looked at sea turtles in other warm areas. There are more female turtles there, too.

84% of sea turtles hatchlings in Cape Verde are now female

This is worrying, so scientists have found ways to keep the turtle nests cool. Keeping the eggs cool means more male turtles can be hatched. One way is to move the eggs under the trees or bushes. Scientists have also put the eggs into smaller groups. Many eggs close together can heat up.

Llorente’s team collects the eggs in a bag. Then they bring them to a place on the beach behind a fence. The fence keeps animals away that want to eat the eggs. It also lets the scientists watch the temperature of the eggs.

【1】Which sentence from the passage is the topic sentence?

A.Every year, sea turtles swim to Cape Verde.

B.Without enough males, sea turtles could die out.

C.The fence keeps animals away that want to eat the eggs.

D.The past five years have been the hottest years on Earth.

【2】How does temperature hurt turtles?

A.Higher temperatures make turtle eggs hatch as females.

B.Turtle eggs will not hatch if the temperature is too cold.

C.Turtle eggs are hatched as males when it cools down.

D.A female turtle lays more eggs if it is warmer.

【3】Why do businesses on Cape Verde need turtles to hatch each year?

A.Because the companies earn money from selling turtles.

B.Because people there enjoy swimming with turtles.

C.Because turtles bring tourists and money to the area.

D.Because it helps to keep the temperatures cool.

【4】Which place has the highest percentage (百分比) of female turtles?

A.San Diego.B.Boca Raton.C.Cape Verde.D.Great Barrier Reef.

【5】Which is the way to help more baby boy turtles be hatched?

A.Put the turtle eggs in groups.

B.Move the eggs to cooler places.

C.Collect and keep the eggs in bags.

D.Watch and help the turtles lay eggs.

Answer 1

【答案】

【1】B

【2】A

【3】C

【4】D

【5】B

【解析】

本文介紹了海龜?shù)纳�存情況，由于地球變暖，雌性海龜?shù)恼急冗h(yuǎn)大于雄性海龜，長(zhǎng)此以往，海龜可能會(huì)滅亡。

【1】主旨大意題。根據(jù)“Female sea turtles are very important because they lay eggs. But male turtles are also needed to help make babies.”可知，性海龜非常重要，因?yàn)樗鼈兿碌�，但是也需要雄性海龜幫助繁衍后代。根�?jù)下文內(nèi)容可知，雄性海龜數(shù)量非常少，科學(xué)家們也在想辦法提高雄性海龜?shù)姆趸�率，所以本文的主題句應(yīng)為Without enough males, sea turtles could die out.沒有足夠的雄性海龜，海龜將會(huì)滅亡。故選B。

【2】細(xì)節(jié)理解題。根據(jù)“The Earth has been getting warmer. This makes the sand hot. Warm sand makes the turtle eggs hatch (孵化) as females (雌性).”可知，地球變暖了，這讓沙子變熱了，溫暖的沙子使海龜?shù)胺趸�成雌性，所以此處�?/span>“更高的溫度使得海龜?shù)胺趸�成為雌�?/span>”。故選A。

【3】細(xì)節(jié)理解題。根據(jù)“Businesses on Cape Verde are worried. Tourists come to see the sea turtles. The tourists buy local things like pottery. They would lose money if turtles died out.”可知，佛得角的企業(yè)很擔(dān)心，游客來看海龜，游客們買當(dāng)?shù)氐臇|西，比如陶器。如果海龜滅絕了，他們會(huì)賠錢的。所以此處是“因?yàn)楹｝斀o這里帶來了游客和金錢，所以佛得角需要海龜孵化”。故選C。

【4】細(xì)節(jié)理解題。根據(jù)“84% of sea turtles hatchlings in Cape Verde are now female”以及圖中信息可知，佛得角84% 的小海龜都是雌性，圣地亞哥78%的小海龜都是雌性，博卡拉頓90%的小海龜都是雌性，大堡礁99%的小海龜都是雌性。所以在這四個(gè)地方中，只有大堡礁的雌性海龜占比最高，故選D。

【5】細(xì)節(jié)理解題。根據(jù)“Keeping the eggs cool means more male turtles can be hatched.”可知，讓海龜?shù)氨３譀鏊�意味著可以孵出更多的雄海龜，所以此處可以通過把這些海龜?shù)稗D(zhuǎn)移到更加涼快的地方，以便于幫助孵化更多的雄性小海龜。故選B。