It began as a game: high school and college students studying computer technology figured out (领会到，想象出来) they could use personal computers to break in...
Mary and Peter were having a picnic with some friends near a river when Mary notice an object overhead. "Look!" she shouted to her friends. ...
The expensive shops in a famous arcade (有拱廊的街道) near Piccadilly were just opening. At this time of the morning, the arcade was almost empty. Mr. Taylo...
In 1977, a dead author of detective stories saved the life of a 19-month-old baby in a most unusual way. The author was Agatha Christie, one of the mo...
To lift something from the floor correctly, first bend your knees and squat down. Keep your back and hips(臀部) and waist (腰部) in a line. If you bend ov...
Some English words are made up of the same part and have different beginnings and different endings, such as import, report and transport. All these w...
We may be very pleased with the rapid progress we have made in every field of study. But the way to test a student's knowledge and ability still r...
People today expect to be examined when they enter a doctor's office. At least they expect their blood pressure and temperature to be measured. Ho...
In China some radio broadcasting stations use hotlines to encourage the listeners to take part in the talk shows. That's a good idea. Yes, the fac...
A spell checker is a program that checks the spelling of every word in a document by looking up each word in its dictionary．If the word does not appea...