24. Smooth muscle help us _________________. 25. Smiling uses less energy than ___________________.
A. frowning B. a lot of fibers C. to digest food D. to function properly E. whenever we are happy F. whenever we do something 第四部分：填句补文（5*2）
Biological Clock
When the sun rises on a warm and sunny day, you can see some
flowers open up. When they close late in the afternoon, other flowers open. Biological rhythms(生物节律), like the opening and closing of flowers, happen all over nature. But not all of them are daily rhythms. Some, like the beating of our heart, happen every second. 26
Scientists use the term biological clock to describe the timing that controls biological rhythms. 27 In some animals it is probably
controlled by the brain. In plants and other living things that have no brain, it must be something else.
The migration of animals happens when a signal is sent out. For example, when days become shorter, birds leave the northern parts of the world and fly south where it is warm. 28
Humans also have biological clocks that control their daily rhythms. When people travel by plane from one continent to another, they often cross many time zones. Their internal clocks don’t seem to work correctly. We call this jet lag(时差). 29 People who work night shifts also have
problems with their biological clocks. They may not be as active as people who work during the daytime.
Biological clocks control many rhythms of life. 30 Doctors are looking for new ways to make travelling more comfortable and medical treatment more effective.
A. But where can you find it? B. This makes them feel tired. C. In the summer they fly back to have babies.
D. We are learning more and more about them. E. Biological clocks can be adjusted. F. Other rhythms are based on months, seasons or years. 第五部分：填词补文（10*1.5）
Life is Difficult
What makes life difficult is that the process of facing and solving problems is a painful one. Problems cause 31 , anger, fear or despair. These are 32 feelings, often as painful as any kind of physical pain. And
since life 33 an endless series of problems, it is 34 difficult and is full of pain as well as joy.
Yet it is in this process of 35 and solving problems that life has its meaning. Problems call forth our 36 and our wisdom. It is only because of problems that we grow 37 and spiritually. When we want to encourage the 38 of the human spirit, we encourage the
human capacity to solve problems, just as in school we deliberately 39 problems for our children to solve. It is through the pain of confronting and resolving that we learn. It is for this reason that 40 people learn not to fear but actually to welcome problems and actually to welcome the pain of problems. A. meeting B. courage C. careful D. growth E. wise F. takes G. sadness H. set I. poses J. always K. uncomfortable L. mentally 第六部分：完型补文（10*1.5）
Are There Truths in Dreams?
Imagine waking up after dreaming(dream) about a terrible plane crash. The next day you will make a plane journey that you have 41 (plan) lone before. Will you get on the plane?
A survey shows that you may not cancel your trip. But your dream will
probably influence your 42 (thought) during the journey. You may feel 43 (worry) and find the trip much 44 (long) than before. So dreams may influence what we are 45 (real) doing while we are awake.
The explanation of dreams is still a(n) 46 (clear) are. A team of
researchers are entering a new field of studies: Do dreams actually influence
our 47 (behave)? Over the past few years, they have 48 (do) studies in different cultures and found out that dreams contain some 49 (hide) truths: dreams affect the way people live and work. But
researchers also tell people not to be 50 (easy) influenced by their dreams.
第七部分：短文写作（30分）
某英文报社正在举办题为“E-books or Paper Books?”的征文活动。 请就此题目写一篇英文短文应征。内容包括以下两个方面： ? 你喜欢电子书还是纸质书？ ? 理由是什么？ 答案：
With the popularization Internet, it is as
of computer and
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