8. Well, you want $400 and I say $300, so let's （com)________ at $350.

A、That’s it

B、That’s everything

C、That everything I want

D、It is that

B．How it is that

C．What is it that

D．What it is that

New "fake fat" products appeared on store shelves in the United States recently, but not everyone is happy about it. Makers of the products, which contain a compound called olestra, say food manufacturers can now eliminate. Critics, however, say the new compound can rob the body of essential vitamins and nutrients (营养物) and can also cause unpleasant side effects in some people. So it's up to consumers to decide whether the new fat-free products taste good enough to keep eating.

Chemists discovered olestra in the late 1960s, when they were searching for a fat that could be digested by infants more easily. Instead of finding the desired fat, the researchers created a fat that can't be digested at all.

Normally, special chemicals in the intestines(肠)"grab" molecules of regular fat and break them down so they can be used by the body. A molecule of regular fat is made up of three molecules of substances called fatting acids.

The fatty acids are absorbed by the intestines and bring with them the essential vitamins A, D, E and K. When fat molecules are present in the intestines with any of those vitamins, the vitamins attach to the molecules and are carried into the bloodstream.

Olestra, which is made from six to eight molecules of fatty acids, is too large for the intestines to absorb. It just slides through the intestines without being broke down. Manufacturers say it's the ability to slide unchanged through the intestines that makes olestra so valuable as a fat substitute. It provides consumers with the taste of regular at without any bad effects on the body. But critics say olestra can prevent vitamins A, D, E and K from being absorbed. It can also prevent the absorption of carotenoids(类胡萝卜素), compounds that may reduce the risk of cancer, heart disease, etc.

Manufacturers are adding vitamins A, D, E and K as well as carotenoids to their products now. even so, some nutritionists are still concerned that people might eat unlimited amounts of food made with the fat substitute without worrying about how many calories they are consuming.

We learn from the passage that olestra is a substance that______.

A．contains plenty of nutrients

B．renders foods calorie-free while retaining their vitamins

C．makes foods easily digestible

D．makes foods fat-free while keeping them delicious

-- _____

A. What did you say？

B. Repeat it.

C. I'm sorry, but I didn't catch what you said.

D. Please say that again.

You want to rent a car? I have a few tips for you. In the first place, before renting a car, think carefully about the kind of car you need. Are you travelling alone or with your family? If you are travelling with your children, you need to rent a big car. You also need to spend some time comparing prices offered by different car rental companies. By doing so, you can often get a best deal and save a lot of money. Secondly, when renting a car, be sure you have the car rental company’s phone number, in case you need to contact the company. Thirdly, if you are returning the car to an airport, remember to leave enough time to check in to your flight. Finally, don’t forget to fill the gas tank before you return the car. This will save you extra fuel and service fees.

Please complete the text summary with appropirate words based on your understanding of the text: The odyssey years are certainly a very complicated ___ of life for young people. The odyssey years can ___ young people with enormous pressure to ___. During these years, not only do these young people need to ___ many difficulties, they also have to face many ___from their parents. But, if you stay strong, be positive, and keep focused, someday you will look back and wonder at the ___ as you passed through the odyssey years.

A、he catches a cold

B、he be catching a cold

C、he caught a cold

D、he would catch a cold

A、besides

B、except for

C、but for

D、except

A、whereabouts

B、wherever

C、whereas

D、whereby