问题 多选题

教学演示的示教弹簧测力计下端挂重4N的物体时,弹簧伸长了4cm,那么下面所设想的实验中不符合实验情况的是[ ]

A.将弹簧测力计的弹簧取下,放在光滑水平桌面上,在弹簧两端同时用4N的力去压弹簧,弹簧将缩短4cm

B.在不超过量程条件下,弹簧测力计下挂5N重的物体时,弹簧伸长了5cm

C.将弹簧测力计的弹簧取下,放在光滑水平桌面上,在弹簧两端同时用2N的力去拉弹簧,弹簧将伸长4cm

D.将弹簧测力计倒置,手提住弹簧测力计的挂钩,将重4N的物体挂在提环上,静止时弹簧测力计指针在大于4N的位置

答案

AC

阅读理解

A newspaper, published usually on a daily or weekly basis, has the main function of reporting news. Many newspapers also furnish their readers with other pieces of useful information, such as weather reports, TV program broadcast, and other kinds of information. They provide commentary on politics, economics, arts and culture. In nearly all cases and in different degrees, newspapers depend on commercial advertising for their income.

A survey said that nearly six out of ten adults in the United States and Canada read a newspaper every day, and seven out of ten read a paper each weekend. By the time they see a newspaper, most people have already heard about breaking news stories on TV or on the radio. Readers depend on newspapers to provide detailed information and analysis (分析) which TV and radio almost don’t offer. Newspapers not only tell readers that an event has happened but also help readers understand what led to the event and how it will affect the world.

The members of a large newspaper work under the nonstop pressure of deadlines to bring news to readers as quickly as their minds, bodies and the technology they use permit. Reporters, photographers, artists, and editors find the materials and form articles and graphics (图片) —sometimes in just a few hours. Page designers combine articles, photos, advertisements, and eye-catching headlines into page layouts (版面), then quickly print the paper out. Printing system may work through the night to print out more than 60,000 copies per hour.

68. What does the second paragraph mainly tell us?

A. How many people read newspapers.         B. Why many people read newspapers.

C. How a newspaper comes into being.        D. How newspapers affect us.

69. The underlined word in Paragraph 1 means “______”.

A. offer        B. review            C. found     D. produce

70. What can we learn from the passage?

A. All the income of a newspaper comes from ads.

B. Canadians depend on newspapers more than Americans.

C. The staff of a newspaper must meet deadlines from time to time.

D. Only by reading the newspaper can readers get the latest news.

71. According to the passage, what affects the pace of a newspaper’s publication?

A. The editors.                                    B. The printers.    

C. Its human resources and technology.        D. The reporters.

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