科普类阅读理解

科普类阅读理解

A

Before the early 1960’s people interested in the differing roles of the left and right hemispheres(半球) of the brain depended almost entirely on facts drawn from animal research, form studies of patients with one-sided brain damage. But it was possible to find out which brain hemisphere was most involved in speech and other functions in normal people by having them listen to two different words coming to the two ears at the same time. This became known as the “dichotic listening” procedure. When se veral word pairs are given in a row, people are unable to report them all, and most right-handers prefer to report, and report more correctly, words given to their right ears. This seems to be related to the fact that signals from the right ear, although sent to both hemispheres, are better sent to the left hemisphere which controls speech. People who have speech represented(回忆) in the right hemisphere, a very unusual occurrence even in left-handed people, more correctly report what their left ears hear.

In contrast to the right-ear advantage for speech, there is generally a left-ear advantage for another type of auditory(听觉的) signal: music. When right-handed people listen to melodic patterns they report them better from the left ear.

1. Which of the following would be the most proper title for the passage?

A. An Introduction to Speech Damage in Patients with Brain Damage.

B. An Investigation into the Role of the Brain’s Hemispheres.

C. An Analysis of Left and Right-handed People.

D. An Examinati on of “Dichotic Listening”.

2. The “dichotic listening” procedure could best be described as hearing _______.

A. two different words in the same ear twice

B. the same word twice in the same ear

C. two different words in different ears

D. two different words twice in two ears

3. according to the passage, right-handed people normally _______.

A. have better hearing in their both ears

B. have little difficulty in reporting words given to their right ears

C. are unable to report word pairs given to their left ears

D. correctly report word pairs given in a row

4. according to the passage, music is best appreciated when heard by _______.

A. the left ear of right-handers

B. people with a left-ear advantage

C. left-handers in their right ears

D. right-handed people who understand melodic patterns

Artificial(假的) 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.

51. Which of the following is the best title for the passage?

A. An Extensive Collection of Glass Flowers

B. The Lives of Leopold and Rudolph

C. Flowers Native to the United States

D. Material Used for Artificial Flowers

52. It can be inferred from the passage that the goal of Leopold and Rudolph was to ______________.

A. create a botanical garden where only exotic flowers grew

B. do a thorough study of plant structure

C. make a copy of one member of each United States flower family

D. show that glass are more realistic than wax flowers

53.The underlined word “it” refers to ______________.

A. the intention

B. the collection

C. one member

D. each flower family

54. Which of the following is NOT included in the display at the Botanical Museum of Harvard University?

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.

55. 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.