I believe that human cloning is wrong. If we ...

I believe that human cloning is wrong. If we toy with nature, we will have to deal with the _______.

A. concepts　　　　　 B. conflicts

C. consequences　　 D. crimes

高二英语单项填空中等难度题查看答案及解析

I believe that human cloning is wrong. If we toy with nature, we will have to deal with the _______.

A. concepts　　　　　 B. conflicts　　　　　　 C. consequences　　　　　 D. credits

高二英语单项填空中等难度题查看答案及解析

Research advances over the past decade have told us that, with a little work, we humans can clone just about anything we want, from frogs to monkeys and probably even ourselves!

So, we can clone things, but why would we want to?

Of all the reasons, cloning for medical purposes has the most potential to benefit large numbers of people. How might cloning be used in medicine?

1. Cloning animal models of disease

Much of what researchers learn about human disease comes from studying animal models such as mice. Often, animal models are genetically engineered to carry disease-causing mutations(变异) in their genes. Creating these transgenic（转基因的） animals is a time-intensive process that requires trial-and-error and several generations of breeding（培育）. Cloning technologies might reduce the time needed to make a transgenic animal model, and the result would be a population of genetically identical animals for study.

2．Cloning stem cells(干细胞) for the treatment of diseases

Stem cells are the body's building blocks, responsible for developing and repairing the body throughout life. As a result, they might be used to repair damaged or diseased organs and tissues. Researchers are currently looking up cloning as a way to create certain human stem cells for the research of diseases.

3. Cloning farm animals for drug production

Farm animals such as cows, sheep and goats are currently being genetically engineered to produce drugs or proteins that are useful in medicine. Just like creating animal models of disease, cloning might be a faster way to produce large herds of genetically engineered animals.

1.From Purpose One, we can infer that________.

A．most transgenic animals are clone

B．most animals carry engineered genes

C．most transgenic animal models are not cloned

D．most animals carry disease-causing mutations in their genes

2.It can be learned from Purpose Two that cloning technologies can be mainly use do________.

A．create damaged or diseased organs and tissues

B．clone genetically defined human stem cells

C．develop and maintain the body

D．repair the body throughout life

3.According to Purpose Three, cloning technologies can be mainly used to________.

A．speed up the producing of genetically engineered animals

B．produce drugs or proteins that are useful in medicine

C．raise genetically engineered cows, sheep and goats

D．produce large herds of animals for human beings

高二英语阅读理解中等难度题查看答案及解析

At present there is a fierce debate over the question_______ human cloning should be allowed.

高二英语单项填空简单题查看答案及解析

At present there is a fierce debate over the question_______ human cloning should be allowed.

A. that                     B. whether          C. what        D. if

高二英语单项填空中等难度题查看答案及解析

It is believed that, ________, the situation will get worse.

A.if it not dealt carefully with B.if only dealt carefully with

C.if not carefully dealt with D.it is not carefully dealt with

高二英语单项填空困难题查看答案及解析

It hasn’t been ______ that food from cloned animals is really safe for humans to eat.

A. confirmed　　　　　　 B. considered

C. turned out　　　　　 D. proved

高二英语单项填空中等难度题查看答案及解析

Cloning an animal is a complex ________ that can go fatally wrong at any stage.

A. process      B. regulation       C. step             D. method

高二英语单项填空中等难度题查看答案及解析

I am a strong believer that if a child is raised with approval, he learns to love himself and will be successful in his own way.

Several weeks ago, I was doing homework with my son in the third grade and he kept standing up from his chair. I kept asking him to sit down, telling him that he would concentrate better. He sat but seconds later, as if he didn’t even notice he was doing it, he got up again. I was getting annoyed, but then it hit me: I started noticing his answers were much quicker and right when he stood up. Could he be focused while standing up?

This made me start questioning myself and what I had been raised to believe. I was raised to believe that a quiet child was more likely to succeed. This child would have the discipline to study hard, get good grades and become someone important in life. Kids that were active and loud would only be objects of stares.

Now people perhaps come to realize that their kids are born with their own sets of DNA and personality features, and all they can do is loving and accepting them. As parents, throughout their growing years and beyond that, we need to be our kids’ best cheerleaders, guiding them and helping them find their way.

I have stopped asking my son to sit down and concentrate. Obviously, he is concentrating, just in his own way and not mine. We need to accept our kids and their ways of doing things. This way may have worked for me but doesn’t mean we need to carry it through generations. There is nothing sweeter than seeing our children being individuals. It makes us happy and that’s just the way I want my kids to live life.

1.According to the passage, the author tried to keep his son seated so that ________.

A. he could finish his homework on time

B. he couldn’t bother the author

C. he could pay more attention to his study

D. he could keep silent in the room

2.Inspired by the case of his son, the author began to doubt ________.

A. the importance of parents

B. the old form of education methods

C. the relationship between kids and their parents

D. the good grades of some kids

3.In the past, what kinds of children are unlovable?

A. Those who are active and loud.

B. Those who are obedient and calm.

C. Those who are talkative and humorous.

D. Those who are shy and careful.

4.What does the author think of teaching children?

A. Encouragement is important.

B. A fine example is necessary in the school.

C. Children shouldn’t be punished.

D. Children can not be taught in the same way.

高二英语阅读理解困难题查看答案及解析

It is quite natural for all of us to want to preserve and protect the foods we purchase. With that in mind, we always think that the best way to do that is by putting them in our refrigerators. However, the following foods should never be placed in the fridge.

◆ Bananas

Bananas should never be placed inside the refrigerator because they keep nutrients better outside the fridge. Bananas are better kept on the counter until they ripen. The cold temperatures actually slow down the ripening process of the bananas, while the wetness and darkness of the fridge will only lead to rotting.

◆Potatoes

Potatoes should be placed in a cool, dry and dark space. The cold temperature of the fridge can turn starch (淀粉) into sugar more rapidly. It is also recommended that potatoes be removed from plastic or paper bags they may have been placed in. Also, keep them unwashed, as well in an uncovered cardboard box.

◆Garlic(大蒜)

Placing garlic in your refrigerator will actually cause it to shoot. The garlic will also rotten and even rubbery. Moreover, inside your fridge, the look of the garlic will rarely change. This means you won’t be able to tell if it’s any good until you finally slice it open.

◆Onions(洋葱)

Placing your onions inside your refrigerator will eventually end up turning them rotten and soft. Unpeeled onions should be kept out of plastic bags and fridge. One of the reasons for this is because unpeeled onions require and need air exposure for maximum life. If you have peeled (剥皮) an onion though, then you should keep it in the fridge, in a covered container.

1.Why should bananas be kept at normal temperature?

A. They can keep fresh long.　　 B. They can remain their hardness.

C. They can keep their normal colour.　　 D. They can grow delicious to eat.

2.What should you do to keep potatoes well?

A. Wrap them in paper bags.　　 B. Put them in open containers.

C. Keep them in airtight cardboard boxes.　　 D. Store them in a cool, wet and dark space.

3.Which of the following can be stored in the fridge under certain condition?

A. Bananas.　　 B. Potatoes.　　 C. Onions.　　 D. Garlic.

高二英语阅读理解简单题查看答案及解析