不合格的控制

在强酸性溶液中能大量共存的离子是：（  ）

A．S^2-

B．AlO₂^-

C．HCO₃^-

D．NH₄⁺

计算机方式下，必须设置“收、付、转”三种凭证类别。( )

New fast food debuts in U.S. fairs—fired Coke

A new fast food is making its debut(首次演出) at U.S. fairs this fall----fried Coke. Abel Gonzales, 36, a computer analyst from Dallas, tried about 15 different varieties before coming up with his perfect recipe----a batter mix made with Coca-Cola syrup, a drizzle of strawberry syrup, and some strawberries.

Balls of the batter are then deep-fried, ending up like ping-pang ball sized doughnuts（面团）which are then served in a cup, topped with Coca-Cola syrup, whipped cream, cinnamon(桂皮)sugar and a cherry on the top.

“It tastes great,” said Sue Gooding, a spokeswoman for the State Fair of Texas where Gonzales’ fried Coke made its debut this fall. “It was a huge success.”

Gonzales ran two stands at the State Fair of Texas and sold up to 35,000 fried Cokes over 24 days for 4.50 dollars each –and won a prize for coming up with “most creative” new fair food.

Ray Crockett, a spokesman for Coca-Cola Co., said: “we’re constantly amazed at the creative ways folks find to enjoy their Coke and make it part of celebrations like fairs and festivals. This is one is definitely different!”

16. The passage is likely to           .

A. be an advertisement                  B. appear in a newspaper

C. make a comment on a new food        D. give us some advice

17. The new fast food probably is the computer analyst’s ____________.

A. 15th  attempt                  B. disliked food

C. most creative food               D. excellent recipe

18. We are sure that ____________.

A. this new kind fast food will be popular in the future

B. this new food has been sold 157500 dollars

C. the food was bought by Coca-Cola Co.

D. this is a new kind of Coke

19. According to Ray Crockett, ___________.

A. fried Coke is a completely different form of Coca-Cola.

B. fried Coke is a very creative use of Coca-Cola.

C. folks enjoy this new kind of food very much.

D. he is amazed at the U.S. fairs this fall.

汽包中装有顶部多孔板的作用是什么？