發(fā)布時間:2012-07-19 共7頁
Hair Detectives
Scientists have found a www.haxgd.comuch they www.haxgd.com barbers and hair stylists in 65 cities in 18 states across the United States. The researchers assumed that the hair they collected came from people www.haxgd.comounts of www.haxgd.comation to analyze hair samples from criminals or crime victims and narrowww.haxgd.comples across the countrywww.haxgd.comber of scholars and students. Geography and Movement
In addition one must recognise the very considerable multiplication of disciplines, particularly in the sciences, www.haxgd.comost evident. Associated www.haxgd.comany international conferences.
36 According to the passage, scholars and students are great travellers because __________.
A standards are higher at foreign universities
B their governments encourage them to travel
C salaries and conditions are better abroad
D they are eager for newww.haxgd.come travelling
B cut down research costs
C develop their ideas more quickly
D keep up with current developments
40 Developments in international cooperation are often, it is suggested, the result of __________.
A friendships formed by scholars at meetings
B articles in learned journals
C the work of international agencies
D programs initiated by governments
第三篇
D The position of the moon can be found changed in an hour's time.
43 It is stated in astrology that ___________.
A the sun is so distant from us that it was hard to follow its motion
B the sun was moving westward around the sky
C the motion of the sun is at the rate of about thirty degrees every week
D the motion of the sun is similar to the revolution of the earth around the sun
44 All the other five planets ___________.
A always appear near the path of the sun
B are moving in a way more complicated than the earth does
C aren't moving around the sun as independently as the earth does
D are moving around the sun at the same speed as the earth does
45 According to the passage which of the following is true? ___________
A A fixed star refers a star that is always stationary on the sky.
B Scientists can tell the motion of the earth from the motions of other five planets.
C Ancient people had scanty knowledge about the movement of the stars.
D All the stars on the sky can be seen all the year around.