Ⅰ型硅酸钙制品用于温度小于（）℃的场合。A.300 B.500 C.650 D.80

阅读理解。

1. Which dish is the cheapest one?

A. Noodles.

B. Potatoes.

C. Fried fish.

D. Eggs and tomato soup.

2. Which drink is the most expensive?

A. Milk.

B. Coffee.

C. Orange juice.

D. Green tea.

3. Which of the following will cost you 31 yuan?

A. Beef with potatoes, a bowl of rice, eggs and tomatoes.

B. Sweet and sour pork, cabbage and a bottle of milk.

C. Vegetable salad, a bowl of noodles and a cup of coffee.

D. Fried fish, a plate of dumplings and a glass of orange juice.

心包叩击音最常见于（）

A.心包积液

B.二尖瓣关闭不全

C.心力衰竭

D.扩张型心肌病

E.缩窄性心包炎

有关消化性溃疡的病理，以下哪种不正确（）

A.溃疡的直径一般小于2cm

B.溃疡愈合一般需要4～8周

C.溃疡呈圆形或椭圆形

D.消化性溃疡多单发

E.溃疡的边缘不整齐

目前国内流行性脑脊髓膜炎的主要菌群有（）

A.A群

B.B群

C.C群

D.D群

E.W135群

欧洲美元期货是一个外汇期货的品种。( )