[单项选择]It is becoming increasingly clear that stress can wreak ______ not only with the immune system, cardiovascular system but hormones too.
A. havoc
B. misery
C. lement
D. wreck

[单项选择]It is becoming increasingly clear that stress can wreak ______ not only with the immune system, cardiovascular system but hormones too.
A. havoc
B. misery
C. lement
D. wreck

[单项选择]The young people are becoming increasingly film ______.
A. conscious
B. conscience
C. conscientious
D. consciousness

[单项选择]National _____ are becoming increasingly meaningless in the global economy.
A. margins
B. edges
C. divisions
D. boundaries

[单项选择]Stress can be either helpful or harmful depending on ______.
A. how a person deals with stress
B. what kind of stress it is
C. whether the stress can lead to emotional, intellectual, or physical disorder
D. how much exercise you do

[单项选择]______ is well-known to all, too much stress can cause disease.
A. Which
B. That
C. It
D. As

[单项选择]Exercise habits can help relieve stress in that ______.
A. exercising gives people opportunities to meet friends
B. exercises prevent people from eating too much
C. exercising gives people a break from physical, mental and emotional tension
D. people can learn new skills while doing exercises

[单项选择]

Passage Five
On a clear night you can see many stars in the sky. These stars are millions of miles away. Are there living things on any of the stars People have always thought about this question. They could not find the answer before now. Today scientists know more about space than ever before. Some machines can help them look for the answer.
How will scientists do this People can’ t go to the stars. The stars are far away. A person would take hundreds of years to the next star in a spaceship. So scientists are sending out radio signals. These signals travel in space at the speed of light. At that speed, radio signals will take 25 years to reach the next star. The signals ask "Is there anyone out here". Living things in space must have machines to hear the signals. We will not get an answer to our signals for more than 50 years. However, scientists are already listening. Someone from space may be trying to send signals to us, too.
S
A. "How can scientists use machines to look for a star"
B. "How far away are the stars"
C. "How many years a person would take to go to the next star in a spaceship"
D. "Is there life in space"

[单项选择]

Passage Five On a clear night you can see many stars in the sky. These stars are millions of miles away. Are there living things on any of the stars People have always thought about this question. They could not find the answer before now. Today scientists know more about space than ever before. Some machines can help them look for the answer. How will scientists do this People can’ t go to the stars. The stars are far away. A person would take hundreds of years to the next star in a spaceship. So scientists are sending out radio signals. These signals travel in space at the speed of light. At that speed, radio signals will take 25 years to reach the next star. The signals ask "Is there anyone out here". Living things in space must have machines to hear the signals. We will not get an answer to our signals for more than 50 years. However, scientists are already listening. Someone from space may be trying to send signals to us, too. Scientists also have sent
A. longer and larger
B. longer and nearer
C. smaller and farther
D. smaller and nearer

[单项选择]It is not clear how much English students can learn ______the Internet.
A. in
B. with
C. by
D. through