[单项选择]The troposphere is the warmest part of the atmosphere because it _______.
A. contains a layer of ozone gases.
B. about 42 degrees colder than on the ground.
C. 21% oxygen by weight.
D. less than 1% of xenon by volume
E. about 75 degrees colder than in Interlaken
F. is warmed by the earth’s heat.

[单项选择]The passage implies that the warmest temperatures among the periods mentioned occurred
A. ( in the early eighteenth century
B. ( 160,000 years ago
C. ( at the end of each ice age
D. ( between 360 and 285 million years ago

[单项选择]Lighting can be used not only to create an atmosphere, but also to________ features of the house, such as ornaments or pictures.
A. highlight
B. underline
C. activate
D. upgrade

[单项选择]The past decade has been the warmest for 1,000 years, according to a(n) ________of ice cores drilled from a glacier(冰川) in the Himalayas.
A. analogy
B. analysis
C. anniversary
D. appendix

[单项选择]If you take part in the first competitive part of the tour, you will ride for ______.
A. 35 kilometers
B. 55 kilometers
C. 75 kilometers
D. 110 kilometers

[单项选择] Part Ⅱ Structure
Directions: This part is to test your ability to construct grammatically correct sentences. It consists of 2 sections.
Section A
Directions: In this section, there are 10 incomplete sentences. You are required to complete each one by deciding on the most appropriate word or words from the 4 choices marked A, B, C and D. Then you should mark the corresponding letter on the Answer Sheet with a single line through the center. Mr. Brown did not tell us （） or not he'll be leaving next week.
A. whether
B. if
C. either
D. weather

[单项选择]Which part of Britain is always fighting
A. England
B. Scotland
C. Wales
D. Northern Ireland

[单项选择]

Section Ⅱ Reading Comprehension Part A Directions: Read the following four texts. Answer the questions below each text by choosing [A], [B], [C] or [D]. Mark your answers on ANSWER SHEET 1. Text 1 Improving the balance between the working part of the day and the rest of it is a goal of a growing number of workers in rich Western countries. Some are turning away from the ideals of their parents, for whom work always came first; others with scarce skills are demanding more because they know they can get it. Employers, Caught between a falling population of workers and tight controls on immigration, are eager to identify extra perks that will lure more "talent" their way. Just now they are focusing on benefits (especially flexible working) that offer employees more than just pay. Some companies saw the change of mood some time ago. IBM has more than 50 different programmes promoting work-life balance and Bank of America over 30. But plen
A. jewelry.
B. positons.
C. policies.
D. payment.