单项选择题

A．They form a completed collection.B．They have a marvel……

(二)

Artificial flowers are used for scientific as well as for decorative purposes. They are made from a variety of materials, such as wax and glass, so skillfully that they can scarcely be distinguished from natural flowers. In making such models, painstaking and artistry are called for, as well as thorough knowledge of plant structure. The collection of glass flowers in the Botanical Museum of Harvard University is the most famous in North America and is widely known throughout the scientific world. In all, there are several thousand models in colored glass, the work of two artist-naturalists, Leopold Blaschka and his son Rudolph.
The intention was to have the collection represent at least one member of each flower family native to the United States. Although it was never completed. It contains more than seven hundred species representing 164 families of flowering plants, a group of fruits showing the effect of fungus diseases, and thousands of flower parts and magnified details. Every detail of these is accurately reproduced in color and structure. The models are kept in locked cases as they are too valuable and fragile for classroom use.

Which of the following statements is true of the flowers at Harvard University（）

A．They form a completed collection.
B．They have a marvelous fragrance.
C．They are loaned to schools for classroom use.
D．They use authentic representations.

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热门试题

单项选择题The main idea of the passage is that（）.

A．reading is more complicated than believable
B．reading ability is something gained rather than taught
C．teachers should encourage students to read as widely as possible
D．teachers should do as little as possible in helping students learn to read

单项选择题第（8）空应选择（）

A．So
B．Therefore
C．Then
D．Actually

单项选择题From Bradley’s victory in the election we can see that（）.

A．blacks had equal rights as whites in the USA
B．black people’s situation began to be improving much more than before
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A．unbelief
B．control
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A．Models of 164 families of flowering plants.
B．Magnified details of flower parts.
C．Several species of native birds.
D．A group of diseased fruits.

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单项选择题Which of the following is true according to the passage（）

A．The Erie Canal brought profits of over $ 114 000000
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A．to make certain everybody saves money
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