You need to know a lot about the computer and the Internet to run an online shop successfully, (sentence with to opener)

ou are chairperson of the Students' Union of Yuming College. Write a letter to invite Mr. Smith, professor of sociology，to deliver a speech at a prize-awarding meeting at your college. In the letter, tell him① the purpose of the meeting,② the importance of his presence and speech, and③ the time and place of the meeting.Don't forget to tell him your phone number (555-5555) and your email address (liping@123.com). Please sign your name as Li Ping. (150-200words)

Read the following paragraph and choose the best topic sentence from the four options that follow. Write the corresponding letter of your choice in the blank provided.

Childcare centers may assist children in their early development. They give children an opportunity to mix with other children and to develop social skills at an early age. Parents and children need to spend some time apart. Children become less dependent on their parents and parents themselves are less stressed and more effective care-givers when there are periods of separation. Parents who cannot go to work because they do not have access to childcare facilities cannot contribute to the national economy. They are not able to utilize their productive skills and do not pay income tax.

A、Childcare centers may help children become more independent.

B、Some children do not have the opportunity to develop their social skills.

C、Childcare services are important to both individual families and the nation.

D、The government should provide more assistance to parents who use childcare.

Your choice:_______

A、In 1896, Isabella celebrated her sixty-fourth birthday, and that same year she crossed northwest China hoping to reach Tibet.

B、Only when tribal warfare broke out, however, and the bridges were tom down did she turn around.

C、During the nineteenth century, a number of fearless women traveled long distances from their homes.

D、Isabella Bird,for example,a British clergyman’s daughter，began traveling and writing when she was in her forties.

E、They visited places far away from their native countries.

F、The book was published in 1838; however, its title, Peregrinations of Pariah, meaning “travels of an outcast，” suggests that not everyone admired its courageous author.

G、While she was traveling, even though her guides collapsed with fever, and then her rice supply grew dangerously low,she didn’t give up.

H、Like Isabella Bird, Flora Tristan, a native of France, proved her adventurous spirit when she sailed from France to Peru, a trip that inspired her to write a book.

Nutritionists recommend the food pyramid for a simple guide to eating the proper foods. Pyramid is a system with a small number of items at the top and a much larger number of items at the bottom. At the base of the food pyramid are grains and fiber. You should eat six to eleven servings of bread, cereal, and rice every day. Next up the pyramid are vegetables and fruit; five to nine daily servings are recommended. The next pyramid level is the dairy group. Two to three servings a day of milk, yogurt,or cheese help maintain good nutrition. To make a fresh milk cheese at home is the simplest of processes. Moving up the pyramid，the next level is the meat，poultry，fish， beans, eggs, and nuts group, of which only two to three servings a day are enough. At the very top of the pyramid are fats, oils, and sweets; these foods should be eaten only infrequently.

Read the following paragraph and write the topic sentence on the answer sheet.

Now let's talk about how the human mind works. Think about the last movie you saw,for example. If you’re like most people,you can probably remember exactly how it began and exactly how it ended. You know what happened in the middle,of course,but those details aren’t as clear as the details of the beginning and the end. This is just the nature of the learning process. Simply because of the way the human mind works, people tend to remember most what comes first and what comes last. Reading works the same way. If you break up a reading task into several sections, there are more starting and stopping points—more beginnings and endings to remember. There will be less material in the middle to be forgotten.

Choose the best topic sentence from the four options below. Write the corresponding letter of your choice in the blank provided.

A、Petroleum, a liquid fossil fuel, comes from decayed plants and animals.

B、Fossil fuels come from the earth and are among the most common types of energy used by man.

C、Coal comes from trees that died millions of years ago, decayed,and then hardened into black rock.

D、Natural gas is formed like petroleum, but the decayed plants and animals have been changed into different kinds of gases.

Your choice: ________

The wildlife specialist said that most bears are dangerous on television.

You will be making less of a financial commitment by leasing a car than to own it.

After sitting for two hours in his office, the doctor finally called me into the examining room.

Example: After seeing an offensive mouthwash ad on television. I resolved never to buy that brand again.

After seeing an offensive mouthwash ad on television, I resolved never to buy that brand again.

11、The moon hid behind a cloud, all the world turned dark.