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The growth rate of bacteria during the exponential phase of growth is
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The ability to use compounds and ions other than oxygen as terminal oxidants in respiration is a widespread microbial trait. This capacity is called
Lack of the enzymes catalase and superoxide dismutase may explain why certain bacteria are
一个信号可以既是随机信号，又是确定信号，这种说法正确吗
Section A (1’*7=7%)Directions: This section is to test your ability to give proper responses. There are 7 recorded questions in it. After each question, there is a pause. The questions will be spoken two times. When you hear a question, you should decide on the correct answer from the 4 choices marked A), B), C) and D) given in your test paper. Then you should mark the corresponding letter on the Answer Sheet with a single line through the center.1. A. Mind your head. B. Yes, I am.C. Sure. D. No hurry.2. A. Yes, please. B. You're welcome.C. See you then. D. Let's go now.3. A. No, thanks. B. Yeah, let me show you.C. My pleasure. D. Here you are.4. A. This way, please. B. Have a nice day.C. Sorry for that. D. Not right now, thanks.5. A. No problem. B. Sounds good.C. Have a good time. D. Take it easy.6. A. 5 hours. B. 55 dollars.C. 45 pages. D. 8 miles.7. A. Here it is. B. Hold the line, please.C. Of course not. D. After you, please.Section B (1’*7=7%)Directions: This section is to test your ability to understand short dialogues. There are 7 recorded dialogues in it. After each dialogue, there is a recorded question. Both the dialogues and questions will be spoken two times. When you hear a question, you should decide on the correct answer from the 4 choices marked A), B), C) and D) given in your test paper. Then you should mark the corresponding letter on the Answer Sheet with asingle line through the center. Now listen to the dialogues.8. A. To find something interesting. B. To work in a new environment.C. To advance his career. D. To have more time with his family.9. A. The manager's office. B. The show room.C. The information center. D. The language lab.10. A. His appointment. B. His presentation.C. His order. D. His holiday.11. A. In a hospital. B. In a bank.C. In a restaurant. D. In a store.12. A. Asking for directions. B. Booking a table.C. Buying a cinema ticket. D. Confirming an order.13. A. The woman's company. B. The man's holiday plan.C. The man's job search. D. The woman's boss.14. A. A smartphone. B. A computer.C. A TV set. D. A suitcase.Section C (1’*5=5%)Directions: In this section, there are 2 recorded conversations. After each conversation, there are some recorded questions. Both the conversations and questions will be spokentwo times. When you hear a question, you should decide on the correct answerfrom the 4 choices marked A), B), C) and D) given in your test paper. Then youshould mark the corresponding letter on the Answer Sheet with a single line throughthe center. Now listen to the conversations.Conversation 115. A. A sales plan. B. A new project.C. An annual report. D. A monthly budget.16. A. Lack of funds. B. Short of hands.C. Software problems. D. Housing problems.17.A. To discuss the project plan. B. To join the man's party.C. To introduce a new app. D. To update the software.Conversation 218. A. To teach kids English. B. To sell books online.C. To travel around the world. D. To further her education.19. A. A college degree. B. A website.C. A driver's license. D. An office.Section D(1’*5=5%)Directions: In this section you will hear a recorded short passage. The passage is printed in the test paper, but with some words or phrases missing. The passage will be read threetimes. During the second reading, you are required to put the missing words or phrases on the Answer Sheet in order of the numbered blanks according to what you hear. The third reading is for you to check your writing. Now the passage will begin.What should you do when a guest makes a complaint? First, take your time and listen with __20__. After the guest expresses his complaint, you can__21__ to show you are listening to him to reply in a way lie "I understand your problem." or "Thanks a lot for bringing up the matter to us." This will give the guest the__22__ that you are supporting him. If you are the person to solve the problem, then __23__to solve it. If you cannot handle it, then __24__ the right person who can solve it.
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