下列构件中，不属于点支承玻璃幕墙组件的是（）。 A.玻璃面板 B.支承结构 C.点支

阅读理解。

     Potato chips were really an accident. The popular food was invented in 1853 by George Crum, who was

a cook at Moon Lake Restaurant, in Saratoga Springs, New York. A guest complained (抱怨) that the fried (炸)

potatoes that Crum had cooked were too thick. Crum thought the guest was making trouble. In retum he cut

potatoes paper thin and fried them.

     The guest loved what soon became known as "Saratoga Chips", and the new dish became the most popular

in the restaurant. Other restaurants in the eastern United States borrowed the idea, but potato chips were not

produced for home use until William Tappenden of Cleveland, Ohio, started the first potato-chip factory in

Cleveland.

     Potatoes are made up of about 25% solids, mostly starches (淀粉) and sugar, and 75% water. But they

are not always so. Marsha McNcil Sherman, Director of Fast Food Association in Los Angeles, explains:

"Cenerally, more of the water can be found in the middle of the potato. Frying is a way to dry the potato. So,

the edges of potatoes are fried faster than the middle."

1. Where did potato chips first appear in the United States?

A. In Cleveland.

B. In Ohio.

C. In New York.

D. In Los Angeles.

2. What can be found most in potatoes, according to the passage?

A. Solids.

B. Starches.

C. Sugar.

D. Water.

3. Why are the edges of potatoes fried faster?

A. Because they have less water.

B. Because they are thinner.

C. Because they have fewer solids.

D. Because they are softer.

一次污染物是指（）。

A.由污染源直接排入环境中的化学性污染物，其理化形状保持未变

B.由污染源直接排入环境中的化学性污染物，发生了物理性变化

C.由污染源直接排出的化学性污染物，进入环境后与其他物质发生了反应

D.原来就存在在环境中的化学物

E.自然环境中的化学物

制锁角是指（）。

A.义齿部件与余留牙之间的夹角

B.义齿就位道与基牙长轴之间的夹角

C.义齿就位道与脱位道的方向之间所形成的夹角

D.义齿就位道与基牙邻面间的夹角

E.义齿脱位道与基牙长轴之间的夹角

胎漏、胎动不安肾虚证的治疗首选（）

A.保阴煎

B.金匮肾气丸

C.当归散

D.八珍汤

E.寿胎丸