Once, three men got {#blank#}1{#/blank#} (lose) in the forest. They decided they would stay in the forest until they found {#blank#}2{#/blank#} (they) way. The next morning, one man went to find some food. Soon, the other two men were {#blank#}3{#/blank#} (surprise) to find him back with a deer and asked how he got the deer. The man replied, “I found tracks, I followed the tracks, and I got a deer.” They both were {#blank#}4{#/blank#} (slight) confused because he had no weapons. A few days {#blank#}5{#/blank#} (late), the second guy went in search {#blank#}6{#/blank#} food and soon came back with a deer too. The other two asked how he managed {#blank#}7{#/blank#} (get) the deer. His reply was {#blank#}8{#/blank#} same as the first man's. Then it was the turn of the third guy to search for food. Many hours passed, and the third man {#blank#}9{#/blank#} (hold) nothing in his hands came back, with blood on his face. The other two asked him {#blank#}10{#/blank#} had happened. He looked at them and relied, “I found tracks, I followed the tracks, and I got hit by a train.”

    Who built the first canal? Perhaps some people long ago, living in {#blank#}1{#/blank#} dry country, discovered that they could dig ditches (沟壑) {#blank#}2{#/blank#} (irrigate) their fields with the river water. And naturally in the days {#blank#}3{#/blank#} boats were the most important means of transport, canals were the easiest means of reaching a place. Furthermore, a ditch {#blank#}4{#/blank#} (join) two rivers proved efficient for boat travel.

    Today, most countries in the world have canals. Even in the 2lst century, goods can be moved more {#blank#}5{#/blank#} (convenient) by boat than by some other means of transport. Some canals, such as the Suez or the Panama, {#blank#}6{#/blank#} (save) ships weeks of time by making their voyage a thousand miles {#blank#}7{#/blank#} (short). Other canals permit boats to reach cities that {#blank#}8{#/blank#} (situate) inland. Still other canals drain lands where there is too much water. Help farmers irrigate fields without enough water, and provide water power for {#blank#}9{#/blank#} (factory) as well.

    Most of the canals have a long history. Canals existed in Egypt thousands of years ago. And the Grand Canal of China was begun about 2, 500 years ago and took centuries to finish. During the seventeenth century, France built many canals that are still {#blank#}10{#/blank#} use today.

Keep Your Eyes Open for Weight Loss Ads

    "In only six days I lost seven pounds of weight."

    "Two full inches in the first three days!"

    These are the kinds of statements {#blank#}1{#/blank#} (use) in magazine, newspaper, radio and television ads, {#blank#}2{#/blank#} (promise) new shapes and new looks to those who buy the medicine or the device. The promoters of products say they {#blank#}3{#/blank#} shape the legs, slim the face and smooth wrinkles. Often such products are nothing more than money-making things for their promoters. The results they produce are questionable, and some are dangerous to health.

    To understand how these products can be legally promoted to the public, {#blank#}4{#/blank#} is necessary to understand something of the laws covering their regulation. If the product is a drug, FDA(Food and Drug Administration) can require proof that it is safe and effective before it {#blank#}5{#/blank#}(put) on the market. But if the product is a device, FDA has no authority {#blank#}6{#/blank#} (require) premarketing proof of safety or effectiveness. {#blank#}7{#/blank#} a product already on the market is a danger to health, FDA can request the producer or distributor to remove it from the market voluntarily, or it can take legal action, including seizure(查封) of the product.

    One notable case a few years ago {#blank#}8{#/blank#}(involve) an electrical device called the Relaxacisor, {#blank#}9{#/blank#} had been sold for reducing the waistline. The Relaxacisor produced electrical shocks to the body through contact pads. FDA took legal action against the distributor to stop the sale of the device on the grounds {#blank#}10{#/blank#} it was dangerous to health and life.

The bicycle is {#blank#}1{#/blank#} most popular means of transport in China. People ride it for various {#blank#}2{#/blank#} (purpose) such as going to and from school and work. Bicycles are very cheap and easy {#blank#}3{#/blank#} (buy) in China.

There are many advantages of riding a bicycle. Firstly, compared with cars {#blank#}4{#/blank#} are powered by gas, bicycles can do good to{#blank#}5{#/blank#} (save) energy and reducing the air pollution. Taking up less space, a bicycle can also {#blank#}6{#/blank#} (lighten) the traffic jams. Most importantly, people can keep {#blank#}7{#/blank#} (health) by riding a bicycle regularly.

{#blank#}8{#/blank#} my view, the future of the bicycle will be bright{#blank#}9{#/blank#} some city governments have built special paths for bicycle riders and{#blank#}10{#/blank#} (provide)"public bicycles" to travel round the city center free of charge. Bicycles will be popular again in China.