一
根据短文内容,从短文后的选项中选出能填入空白处的最佳选项,选项中有两项为多余选项。
Secret codes (密码)keep messages private。Banks, companies, and government agencies use secret codes in doing business, especially when information is sent by computer.
36 Code breaking never lags(落后) far behind code making. The science of creating and reading coded messages is called cryptography.
37 For example, the first letters of “My elephant eats too many eels” Spell out the hidden message “Meet me.”
38 You might represent each letter with a number, For example, Let’s number the letters of the alphabet, in order, from 1 to 26. If we substitute a number for each letter, the message “Meet me” would read “13 5 20 13 5.”
39 For example, ”bridge“ might stand for “meet” and “out” might stand for “me.” The message “bridge out” would actually mean “Meet me.” 40 However, it is also hard to keep a code book secret for long. So codes must be changed frequently.
A. It is very hard to break a code without the code book.
B. In any language, some letters are used more than others.
C. Only people who know the keyword can read the message.
D. As long as there have been codes, people have tried to break them.
E. You can hide a message by having the first letters of each word spell it out.
F. With a code book, you might write down words that would stand for other words.
G. Another way to hide a message is to use symbols to stand for specific letters of the alphabet.
二
A garden that’s just right for you
Have you ever visited a garden that seemed just right for you, where the atmosphere of the garden appeared to total more than the sum(总和) of its parts? 36 . But it doesn’t happen by accident. It starts with looking inside yourself and understanding who you are with respect to the natural world and how you approach the gardening process.
●___37
Some people may think that a garden is no more than plants, flowers, patterns and masses of color. Others are concerned about using gardening methods that require less water and fewer fertilizers(肥料). 38 . However, there are a number of other reasons that might explain why you want to garden. One of them comes from our earliest years.
●Recall(回忆)your childhood memories
Our model of what a garden should be often goes back to childhood. Grandma’s rose garden and Dad’s vegetable garden might be good or bad, but that’s not what’s important. 39 --how being in those gardens made us feel. If you’d like to build a powerful bond with your garden, start by taking some time to recall the gardens of your youth. 40 then go outside and work out a plan to translate your childhood memories into your grown-up garden. Have fun.
A. Know why you garden
B. Find a good place for your own garden
C. It’s our experience of the garden that matters
D. It’s delightful to see so many beautiful flowers
E. Still others may simply enjoy being outdoors and close to plants
F. You can produce that kind of magical quality in your own garden, too
G. For each of those gardens, writer down the strongest memory you have
三
Training for a marathon requires careful preparation and steady, gradual increases in the length of the runs. 36 , buy the best-fitting running shoes you can find. No one can say which brand will work best for you or feel best on your feet, so you have to rely on your experience and on the feel of each pair as you shop. When you have found shoes that seem right, walk in them for a few days to double-check the fit. 37 . As always, you should stretch(伸展) at least ten minutes before each run to prevent injuries.
During the first week, do not think about distance, but run five minutes longer each day. 38 , it is wise to take a day off to rest. But during the next week, set a goal of at least a mile and a half per run. 39 . After two weeks, start timing yourself. 40 . Depending on the kind of race you plan to enter, you can set up a timetable for the remaining weeks before the race.
A.After six days
B.For a good marathon runner
C.Before you begin your training
D.With each day, increase the distance by a half mile
E.If they still feel good, you can begin running in them
F.Time spent for preparation raises the quality of training
G. Now you are ready out a goal of improving distance and time
四
根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
Everyone tries instant noodles(方便面). It is very easy to cook by putting them into the boiling water and add in those MSG(味精) packets. However, have you ever wondered whether this is the correct way of cooking it? __36__ In order to make the noodles join together nicely side by side and achieve beautiful instant noodles in front of us, some form of wax coating(涂蜡) is needed. __37__ It is advisable to have a break of 23 days before we start to eat another packet of instant noodles as our bodies need about 3 days to clear that layer of wax coating away from our system. Do you know the danger of having too much wax coating stored in our stomach? __38
Here are the key points to take note of while preparing instant noodles.
__39__
Repeat Step 1 and try to stir the noodles again to wash away the wax coating on the noodles before cooking it in a new pot of water.
The importance is not eating too many instant noodles. It is very important that we should follow the key points while having our meal of instant noodles.
__40__
A.Nothing is more important than health, so drink enough water.
B.However, the layer of wax coating on the noodles is quite harmful.
C.It is very easy to cook instant noodles, but we must take note of the harm of it.
D.When you first see the noodles, you will notice them nice.
E.Wash the instant noodles.
F.Wash and stir with warm water.
G.It will lead to cancer if it is stored in our body for long.
五
Many facts suggest that children are overweight and the situation is getting worse, according to the doctors. __1__.
Some people blame(责备) the fact that we are surrounded (包围) by shops selling unhealthy, fatty foods, such as fried chicken and ice cream, at low prices. __2__, then probably children would buy less takeaway food.
__3__. I agree with this, because good eating habits begin early in life, long before children start to visit fast food shops. If parents often give their children fried chicken and chocolate rather than healthy food, they will go for sweet and salty foods, and children will find it hard to get rid of the habit.
There is a third reason for this situation. Children these days take very little exercise. They do not walk to school. When they get home, they sit in front of the television or their computers and play computer games. __4__. What they need is to go outside and play active games or sports.
The above are the main reasons for this problem. __5__, as well as forcing them away from fast food shops and bad eating habits.
AThere is another argument that blames parents for allowing their children to become overweight
B.Adults are becoming fatter and unhealthier too
C.If there were fewer of these restaurants
D.Therefore we have to encourage young people to be more active
E.Not only is this an unhealthy pastime(消遣), it also gives them time to eat more unhealthy food
F.I feel there are a number of reasons for this
G.It's a good idea to allow children to eat what they choose