题目内容

A number of students playing on the ground but I don't know what the exact number.

A.
are; is
B.
are; are
C.
is; is
D.
is; are

A
试题分析：a number of一些，许多；the number of……的数目。句意：许多学生正在操场上玩，但是我不知道确切的数目是多少。结合语境可知前文主语为复数形式，故系动词用复数。下文主语number表示抽象含义，故谓语动词用单数，选A。
考点：主谓一致
点评：由number构成的这两个短语是经常考查的对象，其一般解题原则是先区分这两个短语的含义，然后结合语境选择正确答案。其结构，含义比较固定，熟记即可。

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Mr Brown is a policeman. He’s ___1___ every day. He ___2___ ___3___at six __4___ in the
morning. Then he ___5___ a number 18 bus ___6___ work. He works __7___ day. He __8___ lunch at a restaurant ___9___ his friends. He __10___ home very __11___ . Mr Brown is tired, but he says
__12___ his work.

填空题。

Robots are smart. With their computer brains, they help people work in d__1 _ places or do difficult
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Mr Leachim, who weighs two hundred pounds and is six feet t__3 _, has some advantages as a teacher.
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动词运用。
阅读下面短文，用括号内所给动词的适当形式填空，必要时可加助动词或情态动词。
（请将各小题的答案写在短文后相应的横线上。）

      Mr Brown is a policeman. He's busy every day. He   1   (get)up at six o'clock in the morning. Then he
  2 (take)a number 18 bus to work. He works all day. Mr. Brown is tired, but he says he    4 (love) his job.
Look! He 4 (stand) in the street now to help people   5   (walk) across the road.
     Last weekend, he    6   (find) a thief   7 (do) bad things in the supermarket. He took him to the police
station. I think he is a great man.

Some popular places to visit are built by people. Other famous places are created by nature. For e 1 , in the northeast of the United States, there was a famous rock on a high mountain that l 2 just like an old man. He had lots of hair, a big nose and a beard．People c 3 him “The Old Man of the Mountain” and every year more than a m 4 people came to look at him. Scientists think that the stone face had been there for about 17,000 years.

In May 2003, there was very bad w 5 near the Old Man of the Mountain. There were

very high winds and the temperature was very cold. The sky was so c 6 that people couldn’t see the stone face for many days. As soon as the storm was o 7 , people looked for the Old Man and they couldn’t see him. They discovered t 8 he had fallen apart. The stones that made his face sank down the mountain. A number of scientists climbed up to see i 9 they could repair the stone face, but they had to g 10 up. They figured out（断定）that the damage from the weather was just too bad．

Can animals be made to work for people ? Some scientists think that one day animals may be trained （训练） to do a number of simple jobs i (1) of people . They say that at a circus （杂技场）， for example , we may see elephants , monkeys , dogs and other animals doing q (2) skillful （熟练的） things . Perhaps you have seen them on the television or in a film . If you watch closely , you may find that the trainer （驯兽员） always g (3) the animal some sugar

o (4) a piece of fruit as a reward （报酬） . The scientists say that many d (5) animals may be trained to do a lot of simple things if they know they will get a reward f (6) doing that .

Of course , as we know , dogs can be trained to look after a house , and soldiers in both old and modern t (7) have u (8) geese to give warning （警报） by m (9) a lot of noise when an enemy comes near . And also it may be possible to train animals to work in families or

f (10) .

A number of students ______ playing on the ground but I don't know what the exact number______.

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A number of students playing on the ground but I don't know what the exact number.