All scientists subscribe {#blank#}1{#/blank#} the view that it is human activities that have caused the global warming. Huge {#blank#}2{#/blank#} (quantity) of carbon dioxide produced by burning fuels like coal,  natural gas and oil {#blank#}3{#/blank#} (result) in the "greenhouse effect". All scientists also agree that the levels of carbon dioxide keep on {#blank#}4{#/blank#} (increase), so more heat energy tends to be {#blank#}5{#/blank#} (trap) in the atmosphere. {#blank#}6{#/blank#} the scientists have different attitudes towards this phenomenon. On the one hand, some think the {#blank#}7{#/blank#} of increasing the temperature by 5 degrees would be a catastrophe. On the other hand, others are {#blank#}8{#/blank#} to this view and believe that there will be few bad environmental {#blank#}9{#/blank#} caused by more carbon dioxide. On the contrary, they think it will be beneficial to plants, crops and a greater range of animals, {#blank#}10{#/blank#} will make people's life better.

    There has been a recent trend in the food service industry toward lower fat content and less salt. This trend, which was started by the medical community（医学界）{#blank#}1{#/blank#}a method of fighting heart disease, has had some unintended side{#blank#}2{#/blank#}(effect) such as overweight and heart disease-the very thing the medical community was trying to fight.

    Fat and salt are very important parts of a diet. They are required{#blank#}3{#/blank#}(process) the food that we eat, to recover from injury and for several other bodily functions. When fat and salt{#blank#}4{#/blank#}(remove) from food, the food tastes as if is missing something. As {#blank#}5{#/blank#} result, people will eat more food to try to make up for that something missing. Even {#blank#}6{#/blank#} (bad), the amount of fast food that people eat goes up. Fast food{#blank#}7{#/blank#} (be) full of fat and salt; by {#blank#}8{#/blank#} (eat) more fast food people will get more salt and fat than they need in their diet.

    Having enough fat and salt in your meals will reduce the urge to snack(吃点心) between meals and will improve the taste of your food. However, be {#blank#}9{#/blank#} (care) not to go to extremes. Like anything, it is possible to have too much of both, {#blank#}10{#/blank#} is not good for the health.

    One news story about the modem Olympics is about men {#blank#}1{#/blank#} (pretend) to be women to enter the women's events, People are arguing about how fair {#blank#}2{#/blank#} is to test woman athletes to make sure they are not men. One side argues that men are {#blank#}3{#/blank#} (strong), so they will win any women's event. They say that women should be tested to make sure they are not men. The other side argues that this is {#blank#}4{#/blank#} (fair)to women. They say skill is more important than strength. But has this ever really happened? {#blank#}5{#/blank#} answer is yes, several times! The most famous case is that of Dora in the 1936 Olympic Games.

    The Olympics {#blank#}6{#/blank#} (hold) in Berlin, Germany, three years after the Nazis came {#blank#}7{#/blank#} power. The Nazis wanted to win lots of events, but they had wrong ideas about race. They did not want black or Jewish people in the German team. But many of their best athletes were Jewish. The Nazis did not let these athletes compete. But that meant they might lose events! One event {#blank#}8{#/blank#} the Nazis thought they might lose was the women's high Jump. So the Nazis sent a male athlete, Hermann Ratjen, {#blank#}9{#/blank#} (compete) under the name of “Dora”. Did he win? No. “Dora” came fourth. The {#blank#}10{#/blank#} (win) was a young Jewish woman from Hungary. She jumped 1.60 metres. “Dora” only jumped 1.58 metres. So men do not always win.

    Qing Ming {#blank#}1{#/blank#}(associate) with Jie Zitui, who lived in Shanxi province in 600 B.C. Legend goes that Jie saved his starving lord's life by serving a piece of his own leg. When the lord {#blank#}2{#/blank#}(success) in becoming the ruler, he invited his {#blank#}3{#/blank#}(faith) follower to join him. However, Jie turned down his invitation, {#blank#}4{#/blank#}(prefer) to lead {#blank#}5{#/blank#} simple life with his mother in the mountain.

    Believing that he could force Jie out by burning the mountain, the lord ordered his men to set the forest {#blank#}6{#/blank#} fire. To{#blank#}7{#/blank#} astonishment, Jie chose to remain {#blank#}8{#/blank#} he was and was burnt to death. {#blank#}9{#/blank#}(remember) Jie, the lord ordered all fires in every home to be put out on the anniversary of Jie's death. Thus began the "cold food feast", a day when no food could be cooked since no fire could {#blank#}10{#/blank#}(light).

When I was young, I often saw my grandmother dancing in the garden.{#blank#}1{#/blank#}she was old, her movements were still very beautiful. I fell in love with dancing at that moment. I started learning hip-hop. At first, I watched and followed the{#blank#}2{#/blank#}(dancer) on TV. Then I joined a dance club and made a career of dancing. From then on, dancing has become the most{#blank#}3{#/blank#}(wonder) thing in my life.