[单项选择]I really enjoy listening to music（）it helps me relax and takes my mind away from other cares of the day.
A. because
B. before
C. unless
D. until

[填空题]i Predicting climatic changes
ii The relevance of the Little Ice Age today
iii How cities contribute to climate change
iv Human impact on the climate
v How past climatic conditions can be determined
vi A growing need for weather records
vii A study covering a thousand years
viii People have always responded to climate change
ix Enough food at last

The climatic events of the Little Ice Age did more than help shape the modern world. They are the deeply important context for the current unprecedented global warming.

[单项选择]A. It helps to have a good sleep.
B. It helps to strengthen the bones.
C. It helps to supply enough blood to head.
D. It helps to exercise muscles in the body.

[单项选择]

Income inequality in the United State remained relatively stable for a period of nearly forty years. Beginning in the 1970’s, however, this period of stability ended, as the first signs of widening income inequality became apparent. Over the course of the 1970’s and 1980’s , an increasingly clear trend toward greater income inequality emerged. By the end of the 1980’s, the top 20 percent of workers were receiving the largest share of income ever recorded by government figures, and the bottom three fifths were receiving the lowest shares ever recorded. This trend has continued into the 1990’s and currently shows no signs of decline. When the indicators of growing inequality were first observed in the 1970’s, some researchers argued that the effects were merely temporary artifacts of short-term labor market disturbances. The new occupational structure appears to be one with an increase of well-paid technical, scientific and professional jobs at t
A. income became more unequal
B. income became more equal
C. income became more unstable
D. income became more stable

[填空题]What can you enjoy in the evening We can enjoy ______.

[单项选择]The author implies that attempt to treat human relations scientifically have thus far been relatively ______.


A. unilluminating
B. uninterpretable
C. pessimistic
D. encouraging

[单项选择]Today black children in South Africa are still reluctant to study subjects from which they were effectively barred for so long.
A. anxious
B. curious
C. opposed
D. unwilling

[单项选择]The software structure is an expression of the relationship among software modules. In the following phrases, which are NOT the relations among software modules (2 Points) 　　Ⅰ. calling relation 　　Ⅱ. belonging relation 　　Ⅲ. Execution relation 　　Ⅳ. process relation
A. Ⅰ and Ⅱ
B. Ⅱ and Ⅲ
C. Ⅲ and Ⅳ
D. none

[简答题]The Earthquake Country Alliance (ECA) recently released its guidelines for protective action in case of an earthquake. Operating under the slogan, "Drop, Cover, and Hold on," the ECA urges individuals experiencing an earthquake to drop to the ground, seek the cover of a sturdy table, and hold on. The ECA’s most important message is stay put. Individuals should not try to leave the room, even if better cover could be found elsewhere. The secondary message includes what not to do. Persons caught in an earthquake are now told not to seek shelter in doorways. Structurally, doorways are no safer than the rest of the building, and they provide no protection from falling debris. Similarly, individuals should avoid the so-called "triangle of life" on the side of furniture or automobiles.

Select the sentence that summarizes the current safety message from the Earthquake Country Alliance.