水质评价（Water Quality Assessment）

Last summer was Ann's first trip to Spain(西班牙). She was very excited. But when she arrived at the hotel, she found that her Spanish money wasn't in her handbag. She looked for it carefully in all her bags, but she couldn't find it. She had only a ten-pound note with her. She found a place to change her English money. On her way back to the hotel, Ann bought some cheese, some bread and some oranges. She told the manager that she didn't eat Spanish food except for breakfast, because she knew the price of hotels included (包括) breakfast. Other tourists visited places of great interest in Spain. Ann said she wasn't well. In fact, her holiday wasn't bad, except that she was hungry. After all a piece of fruit for lunch, and bread and cheese for supper isn't very much. especially not for two weeks. On the last day of her holiday, Jane, one of the tourists asked Ann why she never ate with them in the hotel restaurant. The food was delicious. Ann told her all about her money problem. Jane looked at her for a moment, and then said, “But didn't you know the price of this hotel includes everything?"

小题1:Why was Ann very excited? Because _______.

A．this was Ann's first trip to Spain

B．Ann was so hungry

C．Ann couldn't find her Spanish money

D．Ann wasn’t well小题2:Ann didn't have Spanish food because _______.

A．she didn't like Spanish food

B．she didn't feel hungry

C．she didn't know the price of that hotel included everything

D．she didn't feel well小题3:What trouble did Ann have when she was in Spain?

A．There was something wrong with her stomach

B．She couldn't find her Spanish money

C．She couldn't find the restaurant in the hotel

D．The food wasn't delicious for Ann小题4:In fact, a piece of fruit for lunch, and bread and cheese for supper _______.

A．is enough for Ann

B．is helpful to Ann

C．is harmful to Ann

D．isn't very much for Ann小题5:On the last day of Ann's holiday Jane told her _______.

A．that she found Ann's Spanish money

B．that she didn't feel well

C．that the price of that hotel included everything

D．that she feels hungry every day

下列何项为左金丸的配伍特点（）

A.肝肾同治

B.辛开苦降

C.散中有收

D.泻中有补

E.开中有合

在机械作用下，炸药发生爆炸的首要条件是（）。

在工程项目竣工验收和总结评价阶段，()负责开展项目的后评价工作。

A．咨询工程师

B．业主

C．政府

D．承包商

在“学生—选课—课程”数据库中的两个关系如下：
S(SNO,SNAME,SEX,AGE)
SC(SNO,CNO,GRADE)
则关系代数表达式πs. sname, sc. grade (σage＞20 (S

SC)等价的SQL命令是SELECT s. sname，sc. grade FROM s, sc WHERE 【6】 AND s. age＞20