Do you have any knowledge of the space station? A space station is a place 【21】______ people can and work on space 【22】______ long periods. It orbits the earth, usually about 200 to 300 miles high. A space station may 【23】______ as an observatory, laboratory, factory, workshop, warehouse, and fuel depot. Space stations are much larger than manned spacecraft, 【24】______ they provide more comforts. Manned spacecraft may 【25】______ people between the earth and the space station. Unmanned spacecraft may supply the station 【26】______ food, water, equipment, mail and so on.
Small space stations can be 【27】______ on the earth and launched orbit by 【28】______ rockets. Larger stations are 【29】______ in space. Rockets or space shuttles 【30】______ modules of the station into space, where astronauts assemble them. Old modules can be replaced, and new modules can be 【31】______ to expand the station.
A space station has 【32】______ one docking port 【33】______ which a visiting spacecraft can attach itself. Most docking ports 【34】______ of a rimmed doorway called a hatch that can connect 【35】______ the hatch on the visiting spacecraft to form. an airtight seal. When the two hatches open, they form. a pressurized tunnel between the station and the visiting spacecraft.
The main tasks of a space station crew involve scientific research. For example, they might analyze the 【36】______ of micro gravity on various materials, 【37】______ the earth's surface, or study the stars and planets.
Astronauts 【38】______ a space station also 【39】______ much of their time to the assembly of equipment and the expansion of the station's facilities. This includes 【40】______ beams, connecting electrical and gas lines, and welding permanent joints between sections of the station. The crew must also fix or replace broken equipment.
【21】
A. which
B. that
C. where
D. in which
PART C
Directions: You will hear three dialogues or monologues. Before listening to each one, you will have 5 seconds to read each of the questions which accompany it. While listening, answer each question by choosing A, B, C or D. After listening, you will have 10 seconds to check your answer to each question. You will hear each piece ONLY ONCE.
听力原文: I flew to San Francisco to take care of some business with Mr. Jordan. But as soon as I arrived, I got sick and couldn't meet with him. I had to call our appointment off. Then, when I felt better I thought about visiting him at his home, but he lived too far away. I tried to telephone him during office hours, but he was busy. The receptionist said that Mr. Jordan would call me back, but he didn't. I gave up trying to make a new appointment because it would take more time and effort than I wanted to spend. A few days later, I saw a man on the street who looked like Mr. Jordan, and I called out to him. It was someone else. When I returned to my hotel that day, I found a message, which said that Mr. Jordan had gone out of town on some sudden unexpected business. I was sorry I had missed seeing him, but I really enjoyed my Sightseeing in San Francisco.
Why couldn't the speaker meet Mr. Jordan when he got to San Francisco?
A. He was very busy.
B. He arrived late.
C. He was sick.
D. He missed the appointment.
Can authority be criticized? In 【B1】 of the word, authority is not 【B2】 either out of respect or out of 【B3】. In such countries children are not expected to 【B4】 their teachers in school and 【B5】 young scholars or 【B6】 industrial men are hampered in technical research because they don't feel free to 【B7】 with their superiors; Clever researchers may be considered too 【B8】 to have "any right" to present 【B9】 that are different from knowledge and wisdom of men of old ages.
【B10】, the American is 【B11】 from childhood to question, analyze and search. School tasks are 【B12】 to encourage the use of a 【B13】 range of materials. A composition topic like "Write a paper 【B14】 the world's supply of sugar" will send even 【B15】 in search of completely unfamiliar ideas. 【B16】 in the primary grades, children are taught to 【B17】 libraries, and to search for 【B18】 ideas of various sorts. 【B19】 the time they are 14, 15 and 16, many young scholars are marking original and 【B20】 contributions in all fields of science.
【B1】
A. such
B. any
C. much
D. many
By adopting a few simple techniques, parents who read to their children can greatly increase their children's language development. It is surprising but true. (77) How parents talk to their children makes a big difference in the children's language development. If a parent encourages the child to actively respond to what the parent is reading, the child's language skills increase.
A study was done with 30 three-year-old children and their parents. Half of the children participated in the experimental study; the other half acted as the control group. In the experimental group, the parents were given a two-hour training session in which they were taught to ask open-ended questions rather than yes-or-no questions. For example, the parent should ask, "What is the doggie doing?" rather than "Is the doggie running away?" (78) The parents in the experimental group were also instructed in how to help children find answers, how to suggest alternative possibilities and how to praise correct answers.
At the beginning of the study, the children did not differ in measures of language development, but at the end of one month, the children in the experimental group showed 5.5 months ahead of the control group on a test of verbal expression and vocabulary. Nine months later, the children in the experimental group still showed an advance of 6 months over the children in the control group.
Which of the following can be inferred from the passage?
A. Children who talk a lot are more intelligent.
B. Parents who listen to their children can teach them more.
C. Active children should read more and be given more attention.
D. Verbal ability can easily be developed with proper methods.