在英语中，问题一般有两种表达方式：question和problem；科学研究要解决的问题是（）。

A:question B:problem C:question和problem D:都不是

Are you a man or a mouse When people ask this question they want to know (1) you think you are a (2) person or a coward. But you will never really know the answer to this question (3) you are tested in real life. Some people (4) they are brave but when they come face to face with real (5) , they act like cowards. Others think of themselves as cowards, but when they meet danger, they act like (6) .Lenny had always thought of himself as a (7) person. He got worried before examinations. He worried about his job and health. All he wanted in life was to be safe and healthy. (8) , on January 15th, 2002, a plane crashed into the Potomac River in Washington. Lenny went to the river to See what was happening. He saw a woman in the (9) water. Lenny did not feel afraid. He kept very (10) and did a very dangerous thing. He jumped into the Potomac, (11) to the woman, and kept her head (12) the water. Seventy-eight people died that day. Thanks to Lenny, it was not (13) .When you are in a very (14) situation and feel afraid, the body automatically produces a chemical in the blood. The chemical is called adrenalin. (15) adrenalin in the blood system, you actually feel stronger and stronger and are (16) to fight or run away. However, when you are absolutely terrified, the body can produce too much adrenalin. Where this (17) , the muscles become very hard and you find you (18) move at all. You are then paralyzed with fear. This is (19) when we are very frightened, we sometimes say we’re "petrified". This word comes from the Greek word "petros", which means "stone". We are (20) frightened that we become stonelike.

A:life B:question C:mouse D:danger

If the teacher asks a question, you are expected to give an answer. If you do not understand the question, you should raise your hand and ask the teacher to repeat the question. If you do not know the answer, it is all right to tell the teacher that you do not know. Then he or she knows what you need to learn.
There is no excuse for not doing your homework. If you are absent, you should call your teacher or someone who is in your class and ask for the assignment. It is your responsibility to find out what assignments you have missed. It is not the teacher’s responsibility to remind you of missed assignments.
You must not be absent on a test day. If you are seriously ill, call and let the teacher know you will not be there for the test. If your teacher allows make-up tests, you should take the test within one or two days after returning to class. Serious illness is the only reason for missing a test.
Be on time! It is considered rude to be late. Also, it bothers other students. If you must come in late, be sure to do it quietly. Have your books and papers out of your bag before you come into the room. Then go to your seat and sit quietly. In the U.S. it is not necessary to knock before you enter the classroom. Most of the ELC teachers will give you a low grade if you are often late.
Have your book out and be ready to begin when the class starts. Your teacher should not have to ask you every day to take out your book. Be sure you have a paper and a sharp pencil ready.

A:give an answer B:raise your hand C:repeat the question D:ask for another question

The author thought of his fiend's question as a good one, because ______.

A:he also wanted to know who held such an opinion B:it made him recall something during his childhood C:like his friend, he also thought life was unfair D:he learned something from the question as a youngster

When the teacher asks a question, you should ______.

A:raise your hand B:give an answer C:repeat the question D:keep silence

Without question, people's lives in China have improved dramatically in the past two decades.

A:Out of the question B:No doubt C:Naturally D:Obviously

Without question, people's lives in China have improved dramatically in the past two decades.（　）

A:Out of the question B:No doubt C:Naturally D:Obviously

Biotechnology Biotechnology in one form or another has flourished since prehistoric times. When the first human beings realized that they could plant their own crops and breed their own animals, they learned to use biotechnology. The discovery that fruit juices fermented(发酵) in wine, or that milk could be converted into cheese or yogurt(酸乳酶) or that beer could be made by fermenting solutions of malt(麦芽) and hops(啤酒花) began the study of biotechnology. When the first bakers found that they could make a soft, spongy(多乳的) bread rather than a firm, thin cracker they we’’re acting as fledgling(缺乏经验的) biotechnologists. The first animal breeders, realizing that different physical traits could be either magnified or lost by mating appropriate pairs of animals, engaged in the manipulations of biotechnology. What then is biotechnology? The term brings to mind different things. Some think of developing new types of animals. Others dream of almost unlimited sources of human therapeutic (治疗的) drugs. Still others envision (想象) the possibility of growing crops that are more nutritious(有养分的) and naturally pest-resistant (有抵抗力的) to feed a rapidly growing world population. This question elicits (引发) almost as many first-thought responses as there are people to whom the question can be posed. In its purest form, the term "biotechnology" refers to the use of living organisms or their products to modify human health and the human environment. Prehistoric biotechnologists did this as they used yeast cells to raise bread dough(生面团) and to ferment alcoholic beverages, and bacterial cells to make cheeses and yogurts and as they bred their strong, productive animals to make even stronger and more productive offspring. Throughout human history, we have learned a great deal about the different organisms that our ancestors used so effectively. The marked increase in our understanding of these organisms and their cell products gains us the ability to control the many functions of various cells and organisms. Using the techniques of gene splicing(叠接) and recombine DNA technology, we can now actually combine the genetic elements of two or more living cells. Functioning lengths of DNA can be taken from one organism and placed into the cells of another organism. As a result, for example, we can cause bacterial cells to produce human molecules cows can produce more milk or the same amount of feed, and we can synthesize the rapeutic molecules that have never before existed. The sentence "This question elicits..."(para. 2) means ______.

A:people have different responses to the question " What is biotechnology" B:the question "What is biotechnology" has been posed to many people C:responses to the question "What is biotechnology" should be made on the spot D:only these who are asked the question "what is biotechnology" can answer it

Are you a man or a mouse When people ask this question they want to know (1) you think you are a (2) person or a coward. But you will never really know the answer to this question (3) you are tested in real life. Some people (4) they are brave but when they come face to face with real (5) , they act like cowards. Others think of themselves as cowards, but when they meet danger, they act like (6) .Lenny had always thought of himself as a (7) person. He got worried before examinations. He worried about his job and health. All he wanted in life was to be safe and healthy. (8) , on January 15th, 2002, a plane crashed into the Potomac River in Washington. Lenny went to the river to See what was happening. He saw a woman in the (9) water. Lenny did not feel afraid. He kept very (10) and did a very dangerous thing. He jumped into the Potomac, (11) to the woman, and kept her head (12) the water. Seventy-eight people died that day. Thanks to Lenny, it was not (13) .When you are in a very (14) situation and feel afraid, the body automatically produces a chemical in the blood. The chemical is called adrenalin. (15) adrenalin in the blood system, you actually feel stronger and stronger and are (16) to fight or run away. However, when you are absolutely terrified, the body can produce too much adrenalin. Where this (17) , the muscles become very hard and you find you (18) move at all. You are then paralyzed with fear. This is (19) when we are very frightened, we sometimes say we’re "petrified". This word comes from the Greek word "petros", which means "stone". We are (20) frightened that we become stonelike.

A:life B:question C:mouse D:danger