
We _____ the fact that the market is declining.
A. are aware of
B. aware
C. aware of
D. are aware

A. are aware of
B. aware
C. aware of
D. are aware
Man has always wanted to fly. Some of the greatest men in history had thought about
the problem. One of them, for example, was the great Italian artist, Leonardo Da Vinci. In
the 16 th century he made designs for machines that would fly, but they were never built.
Throughout history, other less famous men had wanted to fly. An example was a man
in England 800 years ago. He made a pair of wings from chicken feathers. Then he fixed
them to his body and jumped into air from a tall building. He did not fly very far. Instead,
he fell to the ground and broke every bone of his body and rested in peace.
The first real step took place in France, in 1783. Two brothers, the Montgolfiers,
made a very large “hot air balloon”. They knew that hot air rises. Why not fill a balloon
with it? The balloon was made of cloth and paper. In September of that year, the King and
Queen of France came to see the balloon. They watched it carry the very first air
passengers into the sky. The passengers were a sheep and a chicken. We do not know how
they felt about the trip. But we do know that the trip lasted eight minutes and that the
animals landed safely. Two months later, two men did the same thing. They rose above
Paris in a balloon of the same kind. Their trip lasted twenty-five minutes and they traveled
about.
6. Leonardo Da Vinci _______.
A. said that man would fly in the sky one day
B. built a kind of machine which never flew
C. made designs for flying machines
D. drew many beautiful pictures of birds
7. Eight hundred years ago an Englishman _______.
A. made a kind of flying machine
B. tried to fly with wings made of chicken feathers
C. wanted to build a kind of balloon
D. tried to fly on a large bird
8. In fact, the Englishman who tried to fly _______.
A. got badly wounded B. succeeded in flying
C. lost his life D. flew only 8 minutes
9. The very first air passengers in the balloon were _______.
A. two animals B. the Montgolfiers
C. two Frenchmen D. the King and Queen
10. When did two Frenchmen rise above Paris?
A. In December 1783. B. In September 1783.
C. In the 17 th century. D. In November 1783.
A、 for
B、 that
C、 so that
D、 such that
A、what
B、that
C、where
D、it
A、The child the dog is chasing after is his nephew
B、The fact that the atmosphere of the earth is definitely warming is alarming
C、Jennifer suggests that we should redefine the happiness we pursue
D、The competition in sports is better than the competition that can cause the war
A、condition
B、situation
C、fact
D、matter