分类是重要的科学研究方法,下列物质归类不正确的是( ) A、盐:硫酸钾、氯化钠、硫酸铜、纯碱 B、化合物:干冰、烧碱、冰水混合物、氯气 C、混合物:钢、矿泉水、漂白粉、O2和O3混合 D、单质:Fe、C60、He、Cl2 答案:BOne would have to be a fool to overlook the
importance of using positive thinking for you rather than allowing negative
thinking to work against you. In recent years, research in psychopharmacology (精神药理学) has proved what many
people have known over the centuries: a positive attitude is good for you, good
for your health, good for your wealth, good for everything. Researchers found
that a positive attitude produces a specific chemical reaction which makes
people feel better, while negative thinking results in a decline of hormone (荷尔蒙) and shuts down the immune (免疫的) system. This leads to
illness and depression. Positive thoughts will make you feel better. Even if
you must begin by literally forcing yourself to be positive (faking it, so to
speak), it will become contagious (会传播的) and the positive thoughts will generate nice little
w*w^w..c~o*mchemicals and good feelings which will reinforce the positive
thoughts.
For example, if you force yourself to smile
or laugh, even when you don't feel like smiling or laughing, if you keep at it
for a few minutes, you will soon feel like it. Feelings can generate thoughts,
but thoughts can also generate feelings. Control your thoughts and you can
control your feelings. Positive thinking is important in all aspects of our
lives. There is probably no single factor more important in determining your
success in achieving your career objectives than your own attitude.
It's often been said that in the land of
the blind, the one-eyed man is king. And in the office of militant (好战) negativism, the positive
workers shine like gold. You cannot control external events, but you can learn
to control your reaction to those events and thereby have a positive attitude
and be happy. This vital key to success is totally within your control. Use it.
67. We can infer from the passage
that .
A. positive thinking can cure you of your
diseases
B. positive thinking can easily be
generated by anyone
C. a decline of hormone may cause you to be
depressed
D. a specific chemical reaction is the
cause of negative thinking
68. According to the passage, which of the
following is true?
A. Feeling and thoughts can generate each
other.
B. It's easier to control thoughts than to
control feelings.
C. Your success depends wholly on your
attitude.
D. Keeping smiling will surely make you
successful.
69. Just like a one-eyed man in the land of
the blind, you
should
.
A. take positive attitude in the office of
militant negativism
B. be king in your office
C. pay no attention to what is going on
around you
D. control your feeling to what is
happening to you
70. The best title to the passage
is
.
A. the Bad Effect of Negative
Thinking B. Why Should People Think
C. Positive Thinking Benefits
People D. Thinking: The Vital Way