以下土地利用类型中，其而积前后期变化能反映流域生态状况由退化

【名词&注释】

花粉粒(pollen grain)、土地利用类型(land use type)、办公桌(bureau)、工作性质(nature of work)、疲劳感、初生壁(primary wall)

[单选题]以下土地利用类型中，其而积前后期变化能反映流域生态状况由退化趋于好转的是

A. ②④
B. ①④
C. ②③

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学习资料：

[单选题]In April, thousands of holidaymakers remained abroad duc to the volcanic ash cloud.

A. sticking
B. stuck
C. to be stuck
D. to have stuck

[单选题]B.Below is a housing guide for students going to London.

A. University accommodation (住所)offices
B. Many university accommodation offices have their own list of registered landlords (房东). Others also provide information on accommodation agencies and other housing organization. The advantage of using your university accommodation have enough registered landlords to houses all their students.
C. Property papers: Loot and Renting
D. Loot is an important source (来源) of information about private housing for co-renters. The offers are from private landlords, agencies and individuals looking for other co-renters. They also have a website: www.loot.com. The advantage of using Loot is that there are some excellent bargains. The disadvantage is that there is no quality control over the offers.
E. Renting is another useful paper. The offers in this paper are mainly from accommodation agencies. Their website is at www. renting.co.uk.
F. Accommodation agencies
G. The majority of rented accommodation in London is probably advertised through accommodation agencies. The advantage of using accommodation agencies is that:** will have access to a large number of accommodations. A good agent will listen to your requirements and can save you time in looking for the right accommodation. The disadvantage is that they will make a range of charges to potential renters.
H. Noticeboards
I. Around the universities you will find a number of noticeboards where offers of accommodation will be posted. These will either be from landlords or from students. Some univerisites will also have online noticeboards where students can advertise to other students. Advertisements from students can be an excellent way to find accommodation. However, advertisements from landlords can be problematic.
J. Word of month
K. Some of the best housing in London ins never advertised but is passed on from one group of students to another by word of mouth. It might be that you can find out about good offers from final year students. However, don’t suppose that just because you have found out about housing from a friend it is necessarily going to be better than that found through any other source.
L. Family
M. Faced with the very high rents charged in London, some students and their parents will consider buying as an alternative. In some cases this might be a good choice.
N. 45. What is the advantage of using Loot?
O. It has more offers from accommodation agencies than Renting.
P. It gives you personal information about other co-renters.
Q. Their website is designed mainly for students.
R. there are some good bargains.

[单选题]What effect does reading have on the author?

A. It helps him to realize his dream.
B. It opens up a wider world for him.
C. It makes his college life more interesting.
D. It increases his interest in worldwide travel.

[单选题]Jim went to answer the phone. _______, Harry started to prepare lunce.

A. However
B. Nevertheless
C. Besides
D. Meanwhile

[单选题]依次填入下列横线处的词语，最恰当的一组是办公人员的座椅高度是非常有讲究的。专家___，许多人办公座椅的高度都存在一定问题，久坐会__疲劳感，并出现腰酸背痛的毛病。正确的做法是：首先根据工作性质把办公桌调整到一个__的高度，然后再依据自身情况来调整座椅的高度。

A. 提出 产生 适合
B. 提出 引发 合适
C. 提醒 产生 合适
D. 提醒 引发 适合

[单选题]北拐枣(枳棋)的食用部分是( )。

A. 果皮
B. 假种皮
C. 肉质花托
D. 肉质果柄

[单选题]花粉粒的壁分两层，即( )。

A. 初生壁^{(primary wall)}和次生壁
B. 果胶层和初生壁^{(primary wall)}
C. 外壁和内壁
D. 果胶层和次生壁

[单选题]原套、原体的细胞数目不会因为其具强烈分裂而无限增加。( )

A. 正确
B. 错误

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