题目内容
We learn a language by making mistakes and _____ them.
A. correct B. correct
C. correcting D. to correct
C
分析句子,and连接两个并列的动名词短语。
Events Calendar
TUESDAY
Landscape Pests (害虫)
Learn to identify, control and prevent seasonal landscape-disease and landscape-pest problems at the workshop, 3:30 pm. – 5 pm. Tuesday at the US National Arboretum, 3501 New York Ave NE, Washington. $15; registration required.
202-245-4521 or www.usna.usda.gov.
THROUGH AUGUST 3
Horticultural(园艺的) Art
Watercolors, pen-and-ink drawings and colored-pencil pieces by the Brookside Gardens School of Botanical (植物学的) Art and Illustration will be on display at the exhibit Botanic 2007: The Art and Science of Plants at Brookside Gardens Visitors Center, 1800 Glenallan Ave, Wheaton, through Aug. 3. Free. 301-962-1400 or www.brooksidegardens.org.
THROUGH SEPTEMBER 9
Botanical Art
Visit Patterns in Nature, an exhibit by Amy Lamb featuring photographs of flowers, leaves and other botanical life, at the US Botanic Garden Conservatory (温室),West Orangerie, 100 Maryland Ave SW, Washington, through Sept. 9. The conservatory is open 10 am. – 5 pm. Daily. Free. 202-225-8333.
THROUGH OCTOBER 8
Botanic Garden Exhibit
Celebrating America’s Public Gardens is on view through Oct. 8 at the US Botanic Garden, 100 Maryland Ave SW, Washington. The exhibit, on the Conservatory Terrace and in the National Garden, features displays of 20 public botanic gardens across the country. Hours are 10 am. – 5 pm. Daily. Free. 202-200-8956.
【小题1】If you want to record your name for an event in advance, you may call _____.
| A.202-225-8333 | B.202-245-4521 | C.301-962-1400 | D.202-200-8956 |
| A.can enjoy drawings and coloured-pencil pieces |
| B.can learn how to kill pests living on the plants |
| C.can find displays of 20 botanic gardens across the country |
| D.will enjoy the photographs of flowers and leaves |
| A.the first event is about growing healthy plants |
| B.all of the events are free of charge |
| C.there is no time limit to all the events |
| D.you can find the information of all the events either by phone or by e-mail |
Scientific Progress
Most scientific progress is the result of careful consideration of work that has already been done. The wonderful world which lies before us today has been put up by hardworking men with clear heads and inventive mind, and these who follow them along life’s road will improve on their efforts. It is sometimes necessary to question and even to disbelieve some of the statements made by experts. Action or experiment can often end an argument or achieve a breakthrough.
When men were wondering whether it was possible to reach India by sailing westwards from Europe, and whether there was any land on the other side of the Atlantic Ocean, Christopher Columbus decides to act. He gathered some men, invited them to go on board his three ships, and set out across the dangerous waters of the Atlantic Ocean. He was successful in finding land, but it was not India. The result of his action was that the arguments came to the end.
Any young man who wishes to do research must be courageous enough to question old beliefs and do some original thinking about them. Although we seem to know so much, there are many things we don’t know. Even when we pull an atom to pieces, we do not really know what the pieces are, we often do not reach the reality behind what we discover, and the more we learn, the better we realize our ignorance.
【小题1】Christopher Columbus decided to set out his trip because he wants to ________
| A.travel round the world |
| B.bring words into action |
| C.discover the truth with action |
| D.bring the argument to an end |
| A.the more ignorance we will become |
| B.the more brilliant we are |
| C.the more confident we are of ourselves |
| D.the more we know about our ignorance |
| A.men who do not believe in others but themselves |
| B.those who work hard and dare to break way from old ideas |
| C.those who can make improvements on other people’s work |
| D.men who work extremely hard in following their teachers |
| A.the Atlantic was dangerous to get across |
| B.India was to the west of the Atlantic |
| C.There was land on the other side of the Atlantic |
| D.it was possible sail to India by crossing the Atlantic |