Read the following paragraph carefully and choose the best topic sentence from the four possible answers that follow the paragraph by writing A，B，C or D.In most animals and humans，the desire to sleep is brought on by secretion of a hormone called melatonin. Melatonin is produced in a tiny gland known as the pineal gland. In the evening，the pineal gland reacts to the diminishing levels of daylight and starts to produce melatonin，which is then released into the blood and flows through the body making us drowsy. Its secretion peaks in the middle of the night during our heaviest hours of sleep. In the morning，bright light shining through the eye reaches the pineal gland which reacts by switching off the production of melatonin，thus removing the desire to sleep.

A、Chemicals are important in our body.

B、The pineal gland is linked up to other parts of our body.

C、Light determines our sleep/wake cycle.

D、Melatonin directs various functions of our body.

Topic sentence:_______________________________________________________________

Research scientists at the Institute note that babies are strongly influenced by their environment. They say a baby will smile if its mother does something the baby likes. A baby learns to get the best care possible by smiling to please its mother or other caregiver(照料者). Its mother or other caregiver then understands its information. This is how babies learn to connect and communicate with other people. The American researchers say this ability to learn exists in a baby even before birth. They say newborn babies can recognize and understand sounds they heard while they were still developing inside their mothers. A study last month from the Netherlands found evidence that unborn babies can remember sounds. This study was very valuable indeed. Dutch researchers studied almost one hundred pregnant(怀孕的)women. They played sounds to the growing fetus(胎儿)and watched its movements with ultrasound(超声)devices. They found that by thirty weeks of development the fetus could remember a sound for ten minutes. By the thirty-fourth week，the fetus could remember the sound for four weeks.

Write a letter of application according to the following requirements: You came across an advertisement from Yangcheng Evening News that ABC Company is recruiting an English translator. In your letter，make sure to provide some necessary information such as your age，your hobbies and some of your qualifications like your language proficiency and your working experience. Don’t forget to leave your phone number(136××××××××) for further contact.(150-200 words)

19、“State of the art”describes something that is as modern as possible.

20、Computer technology changed so fast that a“state of the art”computer today might be old tomorrow.

21、Because of improvements in technology，people could buy many new kinds of products in American stores，such as home computers and microwave ovens.

22、“High tech” and“state of the art”are two expressions that describe very modern technology.

23、A“state of the art”product is based on the very latest methods and technology.

24、The expression“state of the art”became as common and popular as computers themselves.

25、High tech became a popular expression in the United States during the early 1980’s.

26、Now all kinds of products are said to be“state of the art.”

Read the following paragraph carefully and choose the best topic sentence from the four possible answers that follow the paragraph by writing A，B，C or D.In most animals and humans，the desire to sleep is brought on by secretion of a hormone called melatonin. Melatonin is produced in a tiny gland known as the pineal gland. In the evening，the pineal gland reacts to the diminishing levels of daylight and starts to produce melatonin，which is then released into the blood and flows through the body making us drowsy. Its secretion peaks in the middle of the night during our heaviest hours of sleep. In the morning，bright light shining through the eye reaches the pineal gland which reacts by switching off the production of melatonin，thus removing the desire to sleep.

A、Chemicals are important in our body.

B、The pineal gland is linked up to other parts of our body.

C、Light determines our sleep/wake cycle.

D、Melatonin directs various functions of our body.

Topic sentence:_______________________________________________________________

Read the following paragraph and underline the topic sentence.

There are several ways for a kid to save money. Many banks offer free savings accounts for children.A great way to utilize your savings account is to deposit a specific amount of your allowance each month. The amount is not much but will add up and help you out a little over time! A lot of banks that offer kids accounts require a parent’s signature if the kids want to withdraw money from their savings. This means the bank account might be a little inconvenient when it comes to purchasing your wanted items. If you would rather have full authority over your money，or if you cannot find a kids’bank plan that you like，there are ways for you to save money at your home .A great way to save money at home is to put a portion of your allowance in a cookie jar or piggy bank in your room. Another way to save money is to put all of your coins in a piggy bank. Coins can collect fast and add up to a lot of money!

In Africa，people walk to fetch water，get to school and to travel to the market.

Choose the best topic sentence from the group below by writing A，B，C or D.

A、Obesity can cause a range of psychological problems.

B、The BMA report highlighted a physical problem obesity causes.

C、Adults are overweight if they have a BMI index over 30.

D、The charity Weight Concern emphasizes the problems of child obesity.

Answer：___________________________________________________________________

To lose weight，hamburgers must not be eaten.

Example：Made by his mother，Tony ate up the cake.

Tony ate up the cake made by his mother.

11、Reading is an important part of our lives it is hard to imagine it can be replaced.

Without low-cost transportation .Millions of Africans have a long walk to their destinations.