All ______ you must do now is to lend us ten dollars, because we haven‘t brought any money with us at the moment
A that　B what　C which D things

All___you must do now is to lend us ten dollars, we haven't brought any money with us at the moment.
A.that              B、what              C、which            D、things

Do dogs understand us?

Be careful what you say around your dog. It might understand more than you think.

A border collie named Rico recognizes the names of about 200 objects, say researchers in Germany. The dog also appears to be able to learn new words as easily as a 3-year-old child. Its word-learning skills are as good as those of a parrot or chimpanzee(黑猩猩).

In one experiment, the researchers took all 200 items that Rico is supposed to know and divided them into 20 groups of 10 objects. Then the owner told the dog to go and fetch one of the items and bring it back. In four tests, Rico got 37 out of 40 commands right. As the dog couldn't see anyone to get clues, the scientists believe Rico must understand the meanings of certain words.

In another experiment, the scientists took one toy that Rico had never seen before and put it in a room with seven toys whose names the dog already knew. The owner then told Rico to fetch the object, using a word the dog had never heard before.

The correct object was chosen in seven out of l0 tests, suggesting that the dog had worked out the answer by process of elimination(排除法). A month later, Rico remembered half of the new names, which is even more impressive.          

Rico is thought to be smarter than the average dog. For one thing, Rico is a border collie, a breed (品种)known for its mental abilities. In addition, the 9-year-old dog has been trained to fetch toys by their names since the age of nine months.

It's hard to know if all dogs understand at least some of the words we say. Even if they do, they can't talk back. Still, it wouldn't hurt to sweet-talk your dog every now and then. You might just get a big, wet kiss in return!

From paragraph 3 we know that _________.

    A. animals are as clever as human beings

    B. dogs are smarter than parrots and chimpanzees

    C. chimpanzees have very good word-learning skills

    D. dogs have the same speaking abilities as 3-year-old children

Both experiments show that____________   

    A. Rico is smart enough to get all commands right

    B. Rico can recognize different things including toys

    C. Rico has developed the ability of learning mathematics

    D. Rico won't forget the names of objects once recognizing them

Which of the following statements is true?

    A. The purpose of the experiments is to show the border collie's physical abilities.

    B. Rico has a better memory partly because of its proper early training.

    C. The Border collie is world-famous for fetching objects.

    D. Rico is born to understand all its owner's commands.

What does the writer want to tell us?

    A. To train your dog.                        B. To talk to your dog.

 C. To be friendly to your dog.                D. To be careful with your dog.         

Do you know what really troubles me? For some reason, words with silent letters have always bothered me. For example, consider these words: know, design, island, school, wrist, naughty, and salmon. All of these words have at least one letter that is not typically pronounced, and these words are just a very small part of words with silent letters in them.

   Some words are even worse, consider this word: colonel. Not only are some letters not pronounced, but letters that are not even there are pronounced.

   Even foreign languages, especially French, are guilty of this needless complexity and confusion. I know there must be some main historical reasons why the words are spelled and pronounced the way they are, but that does not mean bad traditions must continue to survive. Especially if they are no longer logical.

   Unfortunately, there is very little that anyone can do for it, because there’s no group of people who can change or have the right to change the English language for everyone. However, the only thing we can do is make changes in the way we talk and write in hopes that it catches on. For example, I pronounce the letter “l” in salmon on purpose to make people annoyed and to sound more different or complicated. I even pronounce colonel the correct or French way.

   I can only hope these two minor changes to the English language make sense to you, and you will help to keep up these minor changes forever in your everyday life.

We can learn from the passage ________.

   A. colonel is pronounced   

B. salmon is pronounced

   C. all the words with silent letters come from French

   D. linguists will solve the problem of dumb letters

Which of the following is the main reason for silent letters?

   A. French language.   B. Historical reasons.  C. Some linguists  D. Bad traditions.

The underlined phrase “catches on” probably means “________”.

   A. becomes popular   B. gets across   C. follows the fashion  D. doesn’t fall behind

Which of the following is the best title for this passage?

   A. Troubles in everyday life            B. Traps in English words

   C. Words with silent letters            D. Necessary changes of languages

Do you find getting up in the morning so difficult that it’s painful? This might be called laziness, but Dr. Kleitman has a new explanation. He has proved that everyone has a daily energy cycle.

During the hours when you labor through your work you may say that you’re “hot”, that’s true. The time of day when you feel most energetic is when your cycle of body temperature is at its peak(最高峰). For some people the peak comes during the forenoon. For others it comes in the afternoon or evening. No one has discovered why it is so, but it leads to such familiar monologues(自言自语)as: “Get up, John! You’ll be late for work again!” the possible explanation to the trouble is that John is at his temperature—and—energy peak in the evening. Much family quarrelling ends when husbands and wives realize what these energy cycles mean, and which cycle each member of the family has.

You can’t change your energy cycle, but you can learn to make your life fit it better. Habit can help, Dr. Kleitman believes. Maybe you’re sleepy in the evening but feel you must stay up late anyway. Counteract(对抗)your cycle to some extent by habitually staying up later than you want to. If your energy is low in the morning but you have an important job to do early in the day, rise before your usual hour. This won’t change your cycle, but you’ll get up steam and work better at your low point.

Get off to a slow start which saves your energy. Get up with a leisurely yawn(呵欠)and stretch. Sit on the edge of the bed a minute before putting your feet on the floor. Avoid the troublesome search for clean clothes by laying them out the night before. Whenever possible, do routine work in the afternoon and save tasks requiring more energy or concentration for your sharper hours.

If a person finds getting up early a problem, most probably ______.

       A．he is a lazy person       

       B．he refuses to follow his own energy cycle

       C．he is not sure when his energy is low

       D he is at his peak in the afternoon or evening

Which of the following may lead to family quarrels according to the passage?

       A．Not knowing about the energy cycle   

       B．Familiar monologues

       C．A change in a family member’s energy cycle

       D．Attempts to control the energy cycle of other family members

If one wants to work more efficiently at his low point in the morning, he should ______.

       A．change his energy cycle B．overcome his laziness

       C．get up earlier than usual        D．go to bed earlier

You are advised to rise with a yawn and stretch because it will ______.

       A．help to keep your energy for the day’s work

       B．help you to control your temper early in the day

       C．enable you to concentrate on your routine work

       D．keep your energy cycle under control all day