阅读理解。
High-tech machines have made life easier for millions around the world. However, some people still
prefer low-tech ways of doing things. Here's an example of why this is happening. You can microwave
a frozen hamburger in 60 seconds. However, it won't taste as good as one you cook on the stove. And
if you're in that much of a hurry, you probably won't take time to toast the bun. High-tech cooking saves
time, but it doesn't make for better tasting meals.
Most people get their news from high-tech sources like television or the Internet. This has many
advantages. For example, electronic news is more up to date than newspapers or magazines. It's also
more exciting to see live and videotaped news events than photographs. However, newspapers and
magazines have some important advantages. They give more background and details. They also let you
read the parts that are important to you and skip the rest.
Other high-tech timesavers have similar disadvantages. For example, most people use the phone or
email to stay in touch with friends and family members who live in other places. But when you use the
Internet or the phone, you don't always think carefully about what you are saying, and sometimes you
forget the important things you want to communicate. Similarly, when you word process a homework
assignment instead of handwriting it, you can check your spelling electronically and put in fancy headings.
However, some students are so busy with the computer that they don't pay enough attention to the actual words they are writing.
1. Which of the following statements is TRUE according to the passage?
A. The writer likes high-tech cooking.
B. Low-tech cooking produces better-tasting meals.
C. High-tech news programs always keep you reading what is important to you.
D. Handwritten homework is better than word-processed homework.
2. How does the writer feel about high-tech tools?
A. Better late than never.
B. Easy come, easy go.
C. Every coin has two sides.
D. Learn to walk before you run.
3. What is the main subject discussed in the text?
A. High-tech vs. low-tech.
B. Advantages vs. disadvantages.
C. Newspapers and magazines vs. television and the Internet.
D. Word-processing vs. handwriting.
4. How is the text organized?
A. Main idea - Argument - Explanation.
B. Opinion - Discussion - Description.
C. Topic - Comparison - Supporting examples.
D. Introduction - Supporting examples - Discussion.
的斜面体B上，斜面体B的质量为M，现对该斜面体施加一个水平向左的推力F，使物体随斜面体一起沿水平方向向左匀速运动的位移为L，则在此匀速运动过程中斜面体B对物体A所做的功为 ( )
