Nous （faire) un travail.

B．le lui

C．la lui

D．lui en

A、IL-1

B、IL-2

C、IL-4

D、IL-5

Remember to carry a small amount of cash and a copy of your ID with you at all times. There is no need to bring large amounts of cash with you. When shopping, use your credit card instead. Keep your wallet in your front pocket so that there is no way someone's hand could get in there without your noticing it.

Travel with a friend, business partner if possible. It is always better to travel in pairs than to go alone. Know where you’re going. Look at the map before you leave the hotel so that you know where you are going and how to get there.

Lock your valuables (贵重物品) either in the safe in your hotel room or in the main hotel safe.

Be aware of your surroundings. Look around when walking, and avoid keeping your head low.

B-26. When shopping abroad, you are advised to _____.

A、use online services

B、use a credit card

C、pay by check

D、pay in cash

B-27. To keep your wallet safe, you’d better _____.

A、hold it in your keep it in your hand

B、leave it in the hotel safe

C、put it in your front pocket

D、keep it in your shoulder bag

B-28. To know where you are going, you are advised to _____.

A、ask the police for detailed information

B、look at the map before leaving the hotel

C、always travel with your business partner

D、have a smart phone with you while traveling

B-29. Where should you keep your valuables while staying in a hotel?

A、In the hotel safe.

B、In your pockets.

C、In your traveling bag.

D、In a bedside containe.

B-30. Which of the following can be the title for the passage?

A、How to Ask Ways While Traveling.

B、How to Shop in a Foreign Country.

C、Protect Your Personal Information.

D、Stay safe While Traveling Abroad.

A、IL-12促进Th0分化为Thl

B、IL-10抑制Thl的增殖

C、1L-4促进了Thl的增殖

D、IL-4促进Th0分化为Th2

E、IFN-γ抑制Th2的增殖

A、novels

B、songs

C、poems

D、prose

A. IL-2

B. IL-4

C. IL-6

D. TGF-β

E. IL-1

It's always a good idea to put on your seat belt when you're in a car. Why? Think about this example: You put an egg on a skateboard(滑板) and give it a push. If the skateboard hits a stone, it will stop, but the egg won't. It will fly through the air, hit the ground and break.

Now, think what would happen if you tied the egg to the skateboard. When the skateboard hits a stone, the egg won't go flying. It will stay safely on the skateboard.

Volvo, a famous Swedish carmaker, was the first to use seat belts in 1949. Air bags are also very important for car safety, because sometimes a seat belt isn't enough. If the car is going really fast and runs into something, seat belts could even hurt the people who wear them.

Most newer cars have air bags in front of and next to the seats. When a car hits something, its air bags will come out quickly--in less than one second--to keep the people inside safe.

B-21. We have to be careful in driving a car mainly because it could be _____.

A、little fun

B、a pleasure

C、a lot of trouble

D、a great danger

B-22. The example of an egg on a skateboard is used to show that _____.

A、eggs break easily on a moving skateboard

B、cars should not be stopped suddenly

C、seat belts are important to safety

D、driving is a dangerous act

B-23. Which of the following statements is TRUE?

A、People with seat belts tied will always be safe in cars.

B、Volvo was the first carmaker to use seat belts in cars.

C、Air bags will come out before the cars hit something.

D、All cars have air bags in front of the seats.

B-24. According to the passage, air bags are another device that _____.

A、adds safety to car driving

B、is going to replace seat belts

C、comes out slowly to function

D、prevents cars from running too fast

B-25. The best title for this passage is _____.

A、Buy a Volvo with Air bags

B、Make a Car Safe Inside

C、Fasten Your Seat Belts

D、Add Air Bags to Cars

A. Noyes-Whitney方程

B. Fick’s定律

C. Stokes定律

D. Van’tHott方程

E. Arrhenius定律