A CCTV journalist succeeded in arousing a heated discussion among netizens by asking people whether they were happy. The responses to the question were various, even some quite funny ones {#blank#}1{#/blank#} (include). Although people played jokes {#blank#}2{#/blank#} the answers, it did not take long {#blank#}3{#/blank#} they began to figure out the true meanings of happiness.

    It is certain that people's views on happiness {#blank#}4{#/blank#} (affect) greatly by their own life experience. Unfortunately, too many people refer to being rich as happiness and there is no sign of {#blank#}5{#/blank#} decrease in the number of those who are voluntarily at the mercy of wealth. Some people whose {#blank#}6{#/blank#} (intend) is to make big money appreciate being given any chance to multiply their income, believing that is {#blank#}7{#/blank#} their happiness lies. Some are eager to inherit their parents' property, especially those who {#blank#}8{#/blank#} (be) known as silver-spoon kids. Even worse, some would rather break the law to satisfy their financial desire or seek their fortune {#blank#}9{#/blank#} (legal).

    In my opinion, happiness is not about pursuing wealth merely but about admiring the beautiful things in life. Therefore, live your life {#blank#}10{#/blank#} the fullest and be happy.

    Long ago, there lived in Greece a learned man. He was so well-known{#blank#}1{#/blank#}his knowledge of almost everything that lots of people from all over the country came to learn from him. The great man{#blank#}2{#/blank#}(teach) his students whole-heartedly and answered their questions with great{#blank#}3{#/blank#}(patient).

    One day, a student asked him, “My dear teacher, didn't you say you yourself have many more questions about things than we do?{#blank#}4{#/blank#}I think we students have far more than you.”

    With a smile on his face, the teacher drew two circles, one as large as a big cake, the other smaller. Then he said, “Of course, I have learned much more. But it is wrong{#blank#}5{#/blank#}(think) a teacher has fewer questions than his students. Now, look at these two circles. The inside of the{#blank#}6{#/blank#}(big) one is my knowledge of things, and the inside of the smaller one is{#blank#}7{#/blank#}(your). Out of the circles is what is still unknown to us. Since mine is larger, I have to use the longer line to draw the bigger circle. That means I have more opportunities to face something{#blank#}8{#/blank#}(know). And that's{#blank#}9{#/blank#}I myself have more questions than you do. The{#blank#}10{#/blank#}(much) you learn, the more questions you have. You will never learn enough, you know.”

    Experts have started working on {#blank#}1{#/blank#} unbelievable project to make a robot made by NASA act like a human.

    {#blank#}2{#/blank#}(name) Valkyrie, the robot looks like a woman and may be used to explorer Mars one day. It {#blank#}3{#/blank#} (invent) by NASA scientists to compete in the DARPA Robotics Challenges(DRC). It is 1.9 meters tall and {#blank#}4{#/blank#} (weight) 125 kilograms. It comes with a series {#blank#}5{#/blank#} cameras, sonar, and other sensors spread across its body to help it move around.

    Valkyrie is powered by a battery on its back, which can keep it {#blank#}6{#/blank#} (operate) for an hour. It can walk on {#blank#}7{#/blank#} (it) own, pick up objects and control many objects and tools, {#blank#}8{#/blank#}is part of the requirements for the DARPA challenge.

    The machine can walk on two legs and perform basic{#blank#}9{#/blank#} (move) at present. However, the team from Scotland's Edinburgh University wants to give it {#blank#}10{#/blank#} (many) skills. It is hoped that the new and improved robot will work along with astronauts in space.

    If you go out to the fields at night in spring or summer, you can hear frogs singing{#blank#}1{#/blank#} (happy) here and there. It seems as if they were performing a field group singing.

    The frog is a good and useful creature that benefits human beings. They can catch fast-moving{#blank#}2{#/blank#} (insect). Each frog eats a large number of pests ( 害 虫 ) that are harmful to crops. This little creature is regarded {#blank#}3{#/blank#} “the natural enemy of pests”.

    But now frogs{#blank#}4{#/blank#} (get) fewer and fewer. This is because they are killed and put{#blank#}5{#/blank#} the table as a delicious dish by their chief enemy, human beings. It is a shameless and cruel act, isn't it?

    The cause that is{#blank#}6{#/blank#} (responsibility) for the rapid reduction of frogs is that farmers use insect killer to kill pests and frogs get killed as a result of drinking poisoned water while{#blank#}7{#/blank#} (eat) poison-killed insects.

    Something must be done as soon as possible {#blank#}8{#/blank#}(save) frogs. If we don't punish those {#blank#}9{#/blank#}sell and kill frogs to make money, then one day all of us{#blank#}10{#/blank#} (punish) by nature for failing to keep them.