BORDER CROSSINGS While there are no rest...

    PLAYA GRANDE, COSTA RICA? This resort town was long known for Leatherback Sea Turtle (棱皮龟) national Park, nightly turtle beach tours and even a sea turtle museum. However, on a beach where dozens of turtles used to nest on a given night, scientists spied only 32 leatherbacks all of last year.

With leatherbacks threatened with extinction (灭绝), Playa Grande’s turtle museum was abandoned three years ago and now sits among a sea of weeds. And the beachside ticket office for turtle tours was washed away by a high tide in September. “We do not promote that as a turtle tourism destination any more because we realize there are far too few turtles to please,” said Alvaro Fonseca, a park ranger (管理员).

Even before scientists found temperatures going up over the past decade, sea turtles were threatened by beach development, drift net fishing and Costa Ricans interest in eating turtle eggs. But climate change may cause the most serious harm to an animal that has lived in the Pacific for 150 million years.

Sea turtles are sensitive to numerous effects of warming. They feed on reefs, which are dying in hotter seas. They lay eggs on beaches that are being covered by rising seas and more violent waves.

More uniquely their gender (性别) is determined, not by genes but by the egg’s temperature during development. Small rises in beach temperatures can result in ail-female populations, obviously problematic for survival. If the sand around the eggs hits 30 degrees Celsius, the gender balance shits to females: at about 32 degrees they are all female. Above 34, you get boiled eggs.

On some nesting beaches, scientists are artificially cooling nests with shade or irrigation and trying to protect broader areas of coastal property from development to ensure that turtles have a place to nest as the seas rise.

1.Why does the resort town stop promoting it’s turtle tourism?

A.It decides not to disturb the turtles’ normal life.

B.Tourists have lost interest in watching turtles.

C.There are only very few turtles now.

D.The turtle museum was destroyed by a high tide.

2.Which of the following is the major factor in the turtles endangerment?

A.The locals eating habit.

B.Drift net fishing.

C.Beach development.

D.Global warming.

3.We learn from the last paragraph that scientists　　　.

A.are doing research on the sea rise

B.are moving turtles to new homes

C.are protecting turtles’ nests

D.are getting rid of sea weeds

4.The passage intends to　　　.

A.introduce a special kind of sea turtle

B.explain the mystery of turtles’ eggs

C.show the dangers a certain kind of turtle is facing

D.attract more visitors to a sea turtle museum

In 1970, a cyclone(旋风)hit the southern coast of Bangladesh(孟加拉国). So severe and deadly were its effects that it’s______listed as the world’s worst-ever reported natural disaster. The______had a big impact on two Swedish men from Mission Aviation Fellowship(MAF). They traveled ______to Bangladesh for the purpose of seeing what they could do to______. They journeyed south by boat for several days, throughout the country’s vast _____ network to reach the worst-affected area and began to envision(预想)MAF using an aircraft that would _____direct access to large areas of the country that were almost out of_______.

Throughout the 1980s, MAF Australia, along with other MAF groups, sent staff to_______assistance and their patience and dedication _____since they built trust in the countries that had been ____.

In 1997, MAF could______start a flight program within Bangladesh. At that time, besides transporting doctors to hospitals located in _____parts of the country, MAF also _____an on-call emergency medevac(前线急救直升机)service in Bangladesh.

On November 15, 2007, Cyclone Sidr hit southern Bangladesh. MAF’s________response and emergency procedures were seriously_______as the office received over 200 phone calls in one day from aid agency personnel in urgent need of _____to and from the disaster zone. For the next two months, MAF______solidly, seven days a week. The float plane became known by______locals as “The Sea Angel(天使)”---the only aircraft in the country of its type having such a(n) ______.

In 2009, “The Sea Angel” was sent again for rapid assistance_______Cyclone Alla struck. Today, in Bangladesh, MAF makes over 750 flights and transports around 2,500 passengers annually.

1.A. just    B. still    C. soon    D. often

2.A. history    B. failure    C. burden    D. event

3.A. separately    B. occasionally    C. immediately    D. fortunately

4.A. help    B. limit    C. research    D. avoid

5.A. air    B. bus    C. river    D. rail

6.A. reduce    B. prevent    C. change    D. enable

7.A. focus    B. danger    C. order    D. reach

8.A. seek    B. provide    C. promise    D. receive

9.A. ran out    B. came back    C. paid off    D. kept on

10.A. noticed    B. untied    C. assisted    D. traveled

11.A. properly    B. secretly    C. suddenly    D. finally

12.A. secure    B. crowded    C. remote    D. coastal

13.A. request    B. began    C. restore    D. continue

14.A. rapid    B. natural    C. appropriate    D. unexpected

15.A. followed    B. tested    C. forecasted    D. established

16.A. transport    B. message    C. funding    D. encouragement

17.A. accelerated    B. flew    C. appealed    D. searched

18.A. reasonable    B. grateful    C. outgoing    D. respectable

19.A. destination    B. application    C. decoration    D. reputation

20.A. once    B. if    C. when    D. until

－Ｃan I come and have a look at your new house?

－.Yes,_______!

A.with pleasure B.I like it C.I quite agree D.by all means

—Someone wants you on the phone.

—________ nobody knows I am here.

A.Although B.And

C.But D.So

Jack wasn’t saying anything, but the teacher smiled at him ________he had done something very clever.

A.as if B.in case

C.while D.though