按供应范围不同，建筑热水供应系统分为（）。 A．区域热水供应 B．集中热水供应 C．

对律液输布起主宰作用的脏是（）

A.心 

B.肝 

C.脾 

D.肺 

E.肾

阅读短文，选择正确答案。

    Just before giving a wasteful party at his yard, the rich businessman had his swimming pool filled with

poisonous snakes. He called the guests together and announced, "To anyone brave enough to swim across this

pool, I'll give the choice of thousands of square meters of my oil fields, 10000 cows or my daughter's hand in

marriage." 

    As soon as his words were finished, a young man jumped in, swam across the pool and climbed out to safety

but breathlessly. "Congratulations!" the rich man said excitedly. "Do you want my oil fields?" 

    "No!" said the guest. 

    "The 10000 cows?"

    "No!" the young man shouted. 

    "Well, how about my daughter?" 

    "No!" 

    "You must want something," said the businessman. 

    "I just want to know the name of the fellow who pushed me in!"

1. The businessman was ______. [ ]

A. was fooled by the young man

B. cruel and hard-hearted

C. friendly only to the rich guests

D. always keeping his word

2. _____ pushed the young man into the pool. [ ]

A. No one

B. The businessman himself

C. One of the guests

D. A certain bad fellow unknown

3. The young man was ______. [ ]

A. brave

B. careless

C. honest

D. careful

我国古书曾记载公元前28年“三月己末，日出黄，有黑气大如钱，居日中央。”据此回答1—2题。

1、记载中所说的黑气发生在太阳的[ ]

A、光球层

B、 * * 层

C、日冕层

D、内部

2、当黑子和耀斑增多时，下列关于太阳活动对地球的影响叙述正确的是[ ]

A、使地球气候异常，从而使天文五带范围中的热带范围扩大

B、扰乱地球上空的电离层，使地面的无线电短波通讯受到影响，甚至中断

C、在地球各地的夜空都能产生极光

D、使地球的两极地区出现极昼和极夜现象

促排卵药物有（）

A.雄激素

B.肾上腺皮质激素

C.雌激素

D.孕激素

E.尿促性腺激素（HMG）

中央型肺癌发生部位是（）

A.细支气管开口以上

B.主支气管开口以上

C.段支气管开口以上

D.叶支气管开口以上

E.毛细支气管开口以上