Some years ago I was offered a writing assignment that would require three months of travel through Europe. I had been __36__ a couple of times, but I could hardly __37__ to know my ways around the continent. __38__, my knowledge of foreign languages was __39__ to a little college French.

I __40__. How would I, unable to speak the language, __41__ familiar with local geography or transportation systems, conduct interviews and do __42__? It seemed impossible, and with considerable __43__ I sat down to write a letter rejecting the __44__. Halfway through, a __45__ ran through my mind: you can’t learn if you don't try. So I __46__ the assignment.

There were some bad __47__. But by the time I had finished the trip, I was an experienced traveler. And ever since, I have never hesitated to head for even the most __48__ places, without guides or __49__ advanced bookings, confident that somehow I will __50__.

The point is that the new, the different, is almost by definition __51__. But each time you try something, you learn, and as the learning __52__, the world opens to you.

I've learned to ski at 40, and flown up the Rhine River in a (n) __53__. And I know I'll go on doing such things. It's not because I'm braver or more daring than others. I'm not. But I'll accept worry as another name for __54 __ and I believe I can __55__ wonders.

It is sad to see him go but it won’t make a(n) ___ to the way we conduct our affairs.

A. importance      B. difference     C. effect   D. influence

Five cloned pigs，whose organs are much less likely to be rejected(排斥) by a patient，have been born in the U．S.

More than 62,000 people in the U．S. alone are waiting to ____ donated hearts，lungs and so on.The number of human donors falls far short of ____.Pig organs are of a(n) ____ size to human organs，and some scientists hope they might be used to help meet the ____.But previous attempts to transplant pig tissue into humans have ____.

The five pigs ____ a gene that adds a sugar to the surface of pig cells.The sugar would ____ immune(免疫的) rejection of the tissue.“This advance provides a near?time ____ for overcoming the problem that there is not enough human organs for transplants，”says an expert.“This is the ____ gene for overcoming the ____ stage of rejection.”

____，scientists warn that much more work is necessary ____ organs from copies of the pigs could be transplanted into humans.Human genes will need to be added，to ____ rejection of the organ in the long term.There are also ____ that pig viruses could infect patients.

Cloning techniques were ____ to the production of the pigs.Genes can only be knocked out(去除) in a single cell.Cloning of these single cells then allowed the ____ of a whole animal in which the gene was knocked out in every cell.But the PPL researchers have ____ in knocking out only one copy of the gene.The team will now attempt to knock out both copies of the gene.

The team will also ____ tests to investigate whether a virus from the pigs could infect human cells.“Although a lot of the work is very ____，we’re still very far off being able to grow an organ，” says Julia，who is working on this project and quite ____ to creating similar knock?out pigs with researchers at the University of Missouri.

1.A.exchange? B．check

C．possess? D．receive

2.A.discussion? B．demand

C．doubt? D．distance

3.A.beneficial? B．identical

C．similar? D．certain

4.A.shortage? B．condition

C．satisfaction? D．argument

5.A.continued? B．failed

C．finished? D．paused

6.A.lack? B．include

C．make? D．change

7.A.leave? B．cause

C．block? D．destroy

8.A.supply? B．ambition

C．contribution? D．solution

9.A.only B．rare

C．key? D．safe

10.A.last? B．whole

C．next? D．early

11.A.However? B．Therefore

C．Besides? D．Finally

12.A.because? B．before

C．if? D．after

13.A.prevent B．ignore

C．judge? D．weaken

14.A.regrets? B．emotions

C．concerns? D．interests

15.A.simple? B．vital

C．unusual? D．basic

16.A.collection? B．application

C．reception? D．creation

17.A.delighted? B．succeeded

C．joined? D．believed

18.A.conduct? B．plan

C．design? D．study

19.A.perfect? B．strange

C．exciting? D．disappointing

20.A.opposed? B．used

C．devoted? D．suited

Some years ago I was offered a writing assignment that would require three months of travel through Europe. I had been __36__ a couple of times, but I could hardly __37__ to know my ways around the continent. __38__, my knowledge of foreign languages was __39__ to a little college French.
I __40__. How would I, unable to speak the language, __41__ familiar with local geography or transportation systems, conduct interviews and do __42__? It seemed impossible, and with considerable __43__ I sat down to write a letter rejecting the __44__. Halfway through, a __45__ ran through my mind: you can’t learn if you don’t try. So I __46__ the assignment.
There were some bad __47__. But by the time I had finished the trip, I was an experienced traveler. And ever since, I have never hesitated to head for even the most __48__ places, without guides or __49__ advanced bookings, confident that somehow I will __50__.
The point is that the new, the different, is almost by definition __51__. But each time you try something, you learn, and as the learning _52_, the world opens to you.
I’ve learned to ski at 40, and flown up the Rhine River in a (n) __53__. And I know I’ll go on doing such things. It’s not because I’m braver or more daring than others. I’m not. But I’ll accept worry as another name for _54_and I believe I can 55_ wonders.

Welcome to the World Expo 2010 Shanghai China (hereinafter referred to as “Expo 2010”). In order to 1    the legitimate(合法的) interests and rights of visitors and ensure a(n) 2    and orderly visit, the organizer of Expo 2010 (hereinafter referred to as “the Organizer”) has 3   these Terms and Conditions.

Article 1 Scope of Application

These Terms and Conditions are 4    to all visitors to Expo 2010, including those who enter the Expo Site with 5    tickets and children at or below 1.2m at the time of entry, who are eligible（合格的） for free 6  

Article 2 Operation Time

The operation time of the Expo Site shall be 9:00 ~ 24:00. The 7    hours of the pavilions（展馆）shall be 9:30 ~ 22:30. Visitors shall enter the Expo Site before 21:00 and leave before 24:00 on the day of admission. Those with 8    admission tickets may enter the Expo Site between 17:00 and 21:00.

Article 3 Orderly Entry

Visitors shall go through ticket pre-check, 9    check and ticket verification（检验） in an orderly fashion before entering the Expo Site. Those who 10    to cooperate may be denied entry by the Organizer. For the purpose of public health and disease 11    and control, the Organizer may conduct necessary 12    examination on visitors entering the Expo Site. Visitors with special admission tickets are required to 13    a valid ID at the time of ticket verification. Children eligible for free admission and other visitors with mobility difficulties may only enter the Expo Site when 14    by adults. Those under the influence of alcohol and the persons 15    from mental disorders are not allowed to enter.

（ ）1. A. neglect     B. limit                       C. protect               D. expand

（ ）2. A. active      B. safe                      C. friendly              D. exciting

（ ）3. A. translated   B. informed               C. divided             D. formulated

（ ）4. A. changeable  B. applicable             C. invisible              D. reliable

（ ）5. A. valid       B. former                  C. false         D. official

（ ）6. A. invitation   B. destination     C. accommodation       D. admission

（ ）7. A. managing   B. starting                  C. opening                D. ending

（ ）8. A. morning    B. night                      C. evening                D. dawn

（ ）9. A. security          B. ID                       C. qualification          D. license

（ ）10. A. hesitate    B. refuse                   C. approve               D. decide

（ ）11. A. estimate   B. escape                   C. injection               D. prevention

（ ）12. A. health           B. security                C. mental                  D. physical

（ ）13. A. borrow    B. produce               C. order                   D. present

（ ）14. A. controlled  B. accompanied   C. struggled                D. tolerated

（ ）15. A. learning   B. preventing              C. suffering               D. escaping