属于永久性细胞的是A．神经细胞 B．胰腺细胞 C．肝细胞 D．表皮细胞 E．淋巴细胞

在南北回归线附近，降水较多的是（    ）

A．大陆西岸

B．大陆内部

C．大陆东部

D．一样多

Without proper planning，tourism can cause problems．For example，too many tourists can crowd public places that are also enjoyed by the inhabitants of the country．If tourists create too much traffic，the inhabitants become annoyed and unhappy．They begin to dislike tourists and to treat them impolitely．They forget how much tourism can help the country’s economy．It is important to think about the people of a destination (旅行目的地) country and how tourism affects them．Tourism should help a country keep the customs and beauty that attract tourists．Tourism should also advance the wealth and happiness of local inhabitants．

Too much tourism can be a problem．If tourism grows too quickly，people must leave other jobs to work in the tourism industry．This means that other parts of the country’s economy can suffer．

On the other hand，if there is not enough tourism，people can lose jobs．Businesses can also lose money．It costs a great deal of money to build large hotels．Airports，first-class roads，and other support facilities (配套设施) needed by tourist attractions．For example，a major international class tourism hotel can cost as much as 50 thousand dollars per room to build．If this room is not used most of the time，the owners of the hotel will lose money．

Building a hotel is just a beginning．There must be many other support facilities as well，including roads to get to the hotel，electricity，sewers (下水道) to handle waste，and water．All of these support facilities cost money．If they are not used because there are not enough tourists，jobs and money are lost．

小题1:Which of the following do you think has been discussed in the part before this selection?

A．It is extremely important to develop tourism．

B．Building roads and hotels is important．

C．Support facilities are highly necessary．

D．Planning is of great importance to tourism．小题2:The underlined word “inhabitants” (in Paragraph 1) probably means ______．

A．citizens

B．passengers

C．population

D．tourists小题3:Too much tourism can cause all these problems EXCEPT _______．

A．a bad effect on other industries

B．a change of tourists’ customs

C．over-crowdedness of places of interest

D．pressure on traffic小题4:It can be inferred from the text that _______．

A．the author doesn’t like tourism developing so fast.

B．local people will benefit from tourist attraction.

C．people will lose jobs because of the development of tourism.

D．we shouldn’t build support facilities needed by tourist attractions .小题5:The author thinks it is good for local people to know that tourism will _____．

A．waste a lot of money

B．weaken their economy

C．help establish (确立) their customs

D．help improve their life

在隔热屋面工程的施工中相邻两块制品的高低差不得大于（）mm。

A．1

B．2

C．3

D．4

处方药的广告宣传只准在（ ）

A．医疗机构内进行

B．专业性医药报刊进行

C．经过批准的医药学术刊物进行

D．专业性药学报刊进行

接警人员必须迅速准确受理报警，问清发生火灾或者其他灾害事故的种类、危险程度、有无（）、发生灾害事故的单位名称、（）、报警人姓名等情况，同时启动录音记时设备。