单选题Directions: There are 10 blanks in the following passage.
For each numbered blank, there are 4 choices marked A, B, C and D. Choose the
best one and mark your answer on the ANSWER SHEET with a single line through the
center. Artificial flowers are used for
scientific as well as for decorative purposes. They are made from {{U}}
{{U}} 1 {{/U}} {{/U}}of materials, such as wax and glass, so
skillfully that they can scarcely be {{U}} {{U}} 2 {{/U}}
{{/U}}from natural flowers. In making such models, painstaking skill and artistry
are called for, {{U}} {{U}} 3 {{/U}} {{/U}}thorough knowledge of
plant structure. The {{U}} {{U}} 4 {{/U}} {{/U}}of glass flowers
in the Botanical Museum of Harvard University is the most famous in North
America and is widely known {{U}} {{U}} 5 {{/U}} {{/U}}the
scientific world. {{U}} {{U}} 6 {{/U}} {{/U}}, there are several
thousand models in colored glass, the work of two artist-naturalists, Leopold
Blalschka and his son Rudolph. The intention was to have the
collection {{U}} {{U}} 7 {{/U}} {{/U}}at least one member of
each flower family native to the United States. {{U}} {{U}} 8
{{/U}} {{/U}}it was never completed, it contains more than seven hundred
species representing 164 families of flowering plants. {{U}} {{U}}
9 {{/U}} {{/U}}detail of these is accurately reproduced in color and
structure. The models are {{U}} {{U}} 10 {{/U}} {{/U}}in locked
cases as they are too valuable and fragile for classroom use.
单选题
A. a variety
B. some
C. a sort
D. several
【正确答案】
A
【答案解析】[解析] B项some和D项several均表示“一些”，some/several of后面应当接表示限定范围的名词或代词，如：some of the students，several of them。因此，用在本句不合适。C项a sort表示“一种”，这与句子后半部分的举例相矛盾，因而也不能适用。正确答案应选A项a variety，表示“种种”。
单选题
A. compared
B. distinguished
C. contrasted
D. differed
【正确答案】
B
【答案解析】[解析] 本题要求填入一个能与介词from搭配的及物动词，A项compared“比较”和C项contrasted“对比”后接介词with或to，故不符合句子结构的要求。D项differed后接from，但它是不及物动词，没有被动语态。正确答案为B项distinguished“区别”，distinguish A from B意为“把A与B区别开来”。
单选题
A. in addition
B. as well
C. as well as
D. moreover
【正确答案】
C
【答案解析】[解析] 从句子结构看，本题要求填入一个连接名词短语的连接词或词组，四个选项中，A项in addition“而且”和D项moreover“此外”都为副词，不能连接两个并列的成分。B项as well“也”必须与as连用，由于句子中前半部分的and连接的是painstaking skill和artistry.并不是与as well连用，故不能选B。正确答案为C，as well as相当于and。