运动负荷试验后，正常冠状动脉血流通常增加--（） A.3～5倍 B.6～10倍 C.

电缆终端头除内绝缘外，还应有良好的外绝缘。用于户外，尤其是用有机材料做外绝缘时，要考虑大气老化对绝缘性能的影响，应保证在恶劣气候条件下安全运行。为此，带电导体裸漏部分相间及对地要有足够的距离。

下列哪些不是越秀公园内的人工湖。（）

A、南秀湖

B、北秀湖

C、东秀湖

D、西秀湖

阅读理解。

     Culture shock is so named because of the effect it has on people when they enter a new culture.

Experts have been interested in these effects and have agreed on five basic stages of culture shock.

These stages are general and should only be used as a reference. Not every individual will go

through each stage, and one stage may last longer than another for different individuals.

     The hardest thing for most travelers to deal with is the emotional "roller coaster" they seem to be

riding. One moment they feel very positive toward the new culture, and the next moment very

negative. It seems common that international visitors and immigrants vacillate between loving and

hating a new country. Feelings of separation and alienation can be intensified if they do not have a

sense of fitting in or belonging.

     Extreme tiredness is another problem people face when entering a new culture. There can be a

sense of a greater need for sleep. This is due not only to physical tiredness, but also to mental fatigue.

This mental fatigue comes from straining to comprehend the language, and coping with new situations.

     The impact of culture shock can vary from person to person. There can be significant differences

because some people may be better prepared to enter a new culture. Four factors which play into

these are personality, language ability, length of stay, and the emotional support received.

     It is logical to think that when people are deprived of their familiar surroundings they will feel

disoriented. One solution some have found is to bring a few small reminders of home. Pictures,

wall hangings, favorite utensils, and keepsakes(纪念品)are all good candidates to make things feel

more familiar. Another helpful activity is to establish little routines that become familiar over time.

Even better is fitting things that were part of the regular routine back in the home country into the

routine established in the new culture. This will make people feel more at home.

1. A person experiencing "culture shock" is mostly like            .

A. a dog without shelter

B. a bird back home

C. a horse lack of training

D. a fish out of water

2. What does the underlined word "vacillate" in the second paragraph mean?

A hesitate

B. stop

C. watch

D. suffer

3. What is the result for one experiencing "culture shock"?

A. Seeming to be riding a roller coater.

B. Having to agree on five basic stages.

C. Having all home things taken abroad.

D. Suffering both physically and mentally.

4. To overcome "culture shock", one had better         .

A. make some necessary changes in one's way of life

B. recall part of regular routine in the home country

C. buy a few reminders like pictures or wall hangers

D. enjoy things brought from home country more often

关于脊髓压迫症的下列哪项表述是错误的（）

A.肿瘤最多见

B.良性肿瘤引起的脊髓压迫症以室管膜瘤最常见

C.脊柱疾病所致者最常见脊椎外伤、脊椎结核

D.硬脊膜内病变多为原发性良性肿瘤

E.脊髓压迫症包括脊柱、脊膜、脊髓和神经根病变

选择城市用地时，需要对可供选择的城市用地进行评定，按照《城市规划编制办法实施细则》的规定，把用地分为几类

A．2类
B．3类
C．4类
D．9类