建筑石膏的主要成分是（）。A．全水石膏 B．二水石膏 C．无水石膏 D．半水石膏

给小数化简。

40.040=（   ）                       1.4000=（   ）                 4.5050=（   ）

10.000=（   ）                       0.050=（   ）                   0.0100=（   ）

2.00=（   ）                           18.010=（   ）                 8.00030=（   ）

高血压病合并痛风者不宜选用

A．β受体阻滞剂
B．利尿剂
C．ACEI
D．钙拮抗剂
E．α₁受体阻滞剂

Don't complain _______ your neighbors. You'd better get on well with them. [ ]

A. with

B. to

C. at

D. about

阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空。

     It was a very cold evening, an old man was waiting for a ride across the river. He saw several

horsemen pass by but he didn't ask for any help. The wait seemed   1   (end). Then came another rider,

the old man   2   (catch) his eye and said , " Sir, would you mind doing me a favor?"    

     Stopping his horse, he replied," Of course. ". Almost   3   (freeze) , the old man could not get   4    the ground. The horseman helped him onto his horse. He took the old man not just across the river,   5   to his home.    

     "Sir, you didn't even ask the other riders for help, why? What  6   I had said no and left you there?"

the horseman asked.    

     The old man looked at him straight in the eyes and said, "1looked into their eyes, I found they didn't

care,   7   told me it would be useless, but when I looked into   8   ,I saw kindness. "    

     These words touched the rider deeply. "Thank you for   9   you've said. I hope I will never be too

busy to help others. " With that,Thomas Jefferson, the   10   (three) president of the US, turned his horse

around and went away.

下面关于基本ASCII码字符集的叙述中，错误的是

A．ASCII码字符集中字符的代码值小于128

B．ASCII码字符集中的部分字符是不可打印(显示)的

C．对同一个英文字母，小写字母的ASCII代码值比大写字母的值大26

D．ASCII码字符集中部分字符无法使用PC键盘输入