[单项选择]

M: Hi, Susan. I hear that you walk all the way to the office these days.
W: Yes. I have found great pleasure in walking. That’ s the type of exercise I enjoy very much.

Why does the woman walk all the way to the office（）。
A. She takes it as a kind of exercise.
B. She wants to save money.
C. She loves doing anything that is new.
D. Her office isn’t very far.

[填空题]

Hi, I’d like to welcome you all to the computer lab orientation.
We’ll be going into the main lab in a moment, but I want to direct your attention to the bulletin board here in the hallway first. The hours and locations for several other labs are posted on this board. These other labs can be found throughout the campus, but they are all considerably smaller than the main lab. Most of the larger departments have their own computer labs which give priority to students who are departmental majors during times of heavy usage. You will probably want to take note of this information because during midterms and finals we occasionally have large waiting lists of students waiting to use the computer terminals.
In general, there are several roles that apply to computer usage across the campus. The first and foremost rule is that no food or drinks are permitted in any computer lab at any time. The first offense will earn you a warning and the second time you will

[单项选择]If you go down to the woods today, you may meet high-tech trees-genetically modified to speed their growth or improve the quality of their wood. Genetically-engineered food crops have become increasingly common, albeit controversial, over the past ten years. But genetic engineering of trees has lagged behind.
Part of the reason is technical. Understanding, and then altering, the genes of a big pine tree are more complex than creating a better tomato. While tomatoes sprout happily, and rapidly, in the laboratory, growing a whole tree from a single, genetically altered cell in a test tube is a tricky process that takes years, not months. Moreover, little is known about tree genes. Some trees, such as pine trees, have a lot of DNA-roughly ten times as much as human. And, where- as the Human Genome Project is more than halfway through its task of isolating and sequencing the estimated 100,000 genes in human cells, similar efforts to analyze tree genes are still just saplings (幼苗)
A. Time-consuming.
B. Worthwhile.
C. Significant.
D. Technically impossible.