题目内容
Questions 17～20 are based on the following talk. You now have 20 seconds to read Questions 17～20. A working-class wife will, on the whole, obey her husband ______ .
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Directions: This section is designed to test your ability to understand spoken English. You will hear a selection of recorded materials and you must answer the questions that accompany them. There are THREE parts in this section: Part A, Part B, and Part C. Remember, while you are doing the test, you should first put down your answers in your test booklet. NOT on the ANSWER SHEET. At the end of the listening comprehension section, you will have 5 minutes to transfer your answers from your test booklet onto ANSWER SHEET 1. If you have any questions, you may raise your hand NOW as you will not be allowed to speak once the test has started. Now look at Part A in your test booklet.Part A You will hear a conversation. As you listen, answer Question 1 to 10 by circling True or False. You will hear the conversation ONLY ONCE. You now have 60 seconds to read Question 1～10. The speaker knows a few Chinese students.
Directions: This section is designed to test your ability to understand spoken English. You will hear a selection of recorded materials and you must answer the questions that accompany them. There are THREE parts in this section: Part A, Part B, and Part C. Remember, while you are doing the test, you should first put down your answers in your test booklet. NOT on the ANSWER SHEET. At the end of the listening comprehension section, you will have 5 minutes to transfer your answers from your test booklet onto ANSWER SHEET 1. If you have any questions, you may raise your hand NOW as you will not be allowed to speak once the test has started. Now look at Part A in your test booklet.Part A You will hear a conversation. As you listen, answer Question 1 to 10 by circling True or False. You will hear the conversation ONLY ONCE. You now have 60 seconds to read Question 1～10. The speaker thinks most Chinese students in USA are trying hard to adjust themselves to the American life.
Questions 17～20 are based on the following talk. You now have 20 seconds to read Questions 17～20. A working-class wife thinks that her husband ______ .
Text 2 Atmospheric pressure can support a column of water up to 10 meters high. But plants can move water much higher: the sequoia tree can pump water to its very top, more than 100 meters above the ground. Until the end of the nineteenth century, the movement of water in trees and other tall plants was a mystery. Some botanists hypothesized that the living cells of plants acted as pumps. But many experiments demonstrated that the stem of plants in which all the cells are killed can still move water to appreciable heights. Other explanations for the movement of water in plants have been based on root pressure, a push on the water from the roots at the bottom of the plant. But root pressure is not nearly great enough to push water to the tops of tall trees. Furthermore, the conifers, which are among the tallest trees, have unusually low root pressures. If water is not pumped to the top of a tall tree, and if it is not pushed to the top of a tall tree, then we may ask: How does it get there According to the currently accepted cohesion-tension theory, water is pulled there. The pull on a rising column of water in a plant results form the evaporation of water at the top of the plant. As water is lost form the surface of the leaves, a negative pressure, or tension, is created. The evaporated water is replaced by water moving from inside the plant in unbroken columns that extend from the top of a plant to its roots. The same forces that create surface tension in any sample of water are responsible for the maintenance of these unbroken columns of water. When water is confined in tubes of very small bore, the forces of cohesion (the attraction between water molecules) are so great that the strength of a column of water compares with the strength of a steel wire of the same diameter. This cohesive strength permits columns of water to be pulled to great heights without being broken. How many theories does the author mention
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