In the second paragraph the word "paramagnetic" means ___________.

试卷相关题目

• 1It is believed that a new technique to _________ will probably be found.

  A.recycle old aluminum products

  B.discover more bauxite ores

  C.make aluminum by putting ore particles under water

  D.take out aluminum magnetically from poorer ores

  开始考试点击查看答案
• 2The passage focuses on _____________.

  A.construction and manufacturing industry in the United States

  B.new technique of obtaining aluminum from poor ores

  C.consumption and production of aluminum in the United States

  D.the annual import of high-grade aluminum into the United States

  开始考试点击查看答案
• 3According to the announcement, a validated identification card is required to __________.

  A.ride on intercampus buses

  B.read announcements in the cafeteria

  C.make use of the infirmary

  D.check books out of' the library

  开始考试点击查看答案
• 4According to the announcement which of the following is true of special summer hours for the library、

  A.It has them only on the weekends.

  B.It has them both weekdays and weekends.

  C.It has no special summer hours.

  D.The information is not availabl

  开始考试点击查看答案
• 5Times for movies and concerts are not listed in this announcement because ______________.

  A.film or concert occurs every Wednesday at 7 p. m.

  B.the full list would be too long

  C.films and concerts cannot be announced publicly

  D.the full list is not ready yet

  开始考试点击查看答案
• 6By immersing ore particles in water, ____________.

  A.we can get ore particles of equal size

  B.we can purify aluminum particles

  C.we can filter out aluminum

  D.we can improve the working conditions around

  开始考试点击查看答案
• 7We understand from the passage that the United States ____________.

  A.is rich in low-grade aluminum-beating ores

  B.is short of aluminum-making techniques

  C.has to import ninety percent of its annual need of aluminum

  D.has to produce fifty percent of the world's supply to meet its annual aluminum demand

  开始考试点击查看答案
• 8What kind of person needs this service、

  A.A doctor.

  B.A policeman.

  C.The sick.

  D.A student.

  开始考试点击查看答案
• 9How much will it cost you if you want five regular papers and two graphs to be typed、

  A.$5

  B.$1

  C.$5.5

  D.$6

  开始考试点击查看答案
• 10If you have 20 pages to be typed, how long does it take to get them finished、

  A.More than 48 hours

  B.More than 24 hours.

  C.Within 24 hours.

  D.In 24 minutes.

  开始考试点击查看答案