[单项选择]Here’s my simple test for a product of today’s technology: I go to the bookstore and check the shelves for remedial books. The more books, the more my suspicions are raised. If computers and computer programs supposedly are getting easier to use, why are so many companies still making a nice living publishing books on how to use them
Computers manipulate information, but information is invisible. There’s nothing to see or touch. The programmer decides what you see on the screen. Computers don’t have knobs like old radios. They don’t have buttons, not real buttons. Instead, more and more programs display pictures of buttons, moving even further into abstraction and arbitrariness. I like computers, but I hope they will disappear, that they will seem as strange to our descendents as the technologies of our grandparents appear to us. Today’s computers are indeed getting easier to use, but look where they started: so difficult that almost any improvement was welcome.
Computers hav
A. very few companies are publishing such books
B. more and more people are learning computers
C. computers and computer programs are not easy to learn
D. books on how to use computers can be sold at a high price

W: Oh, you still here!
M: Yeah, my today job is too hard, and I have just finished it.
W: You won’t be able to get the airport in time to catch that plane at 6 o’clock.
M: I realize that now.
W: What will you do
M: I’ll have to get my ticket changed.

M: Today the topic of my lecture is "Overview Shingles". I am going to talk about shingles, a disease, which has another name herpes zoster. And I am going to explain: What is shingles What causes shingle What symptoms and complications it has and how to treat the disease
First as we know shingles is a viral infection of the nerve roots. It causes pain and a band of rash that spreads on one side of your body. Shingles is most common in older adults and people who have weakened immune systems because of stress, injury, certain medications, or other factors.
Shingles is caused by the reactivation of the virus (called varicella-zoster virus) that also causes chickenpox. After you recover from chickenpox, the virus lies dormant (which means inactive) in your nerve roots. In some people, it stays dormant for the rest of their lives. In others, the virus reactivates when disease, stress, or aging weakens the immune system. The cause of reactivation of the viru