[单项选择]

Passage Four
If we had to rely on only five senses for survival, we would be in very sad shape indeed. We wouldn’t know up from down. We wouldn’t know when to eat or drink. We wouldn’t know what our muscles were doing or what position our limbs were in. We wouldn’t know when our body was damaged, because we wouldn’t feel pain. We might freeze to death without even a shake, or overheat without a drop of sweat. The five senses--touch, taste, smell, hearing and sight--respond only to stimulation from the out- side world, but the inside world of our bodies must also receive and respond to important messages.
Our internal senses keep us alive and enable us to use our external senses. In effect, the internal senses tell our brains how to run our bodies. Hunger and thirst register in a part of the brain called the hypothalamus, when a lack of food chemicals are detected in the blood.
Another internal sense that controls our ba
A. can use only in emergencies
B. may not understand at present
C. never realize we have
D. do not actively use in everyday living

Passage Four
If we had to rely on only five senses for survival, we would be in very sad shape indeed. We wouldn’t know up from down. We wouldn’t know when to eat or drink. We wouldn’t know what our muscles were doing or what position our limbs were in. We wouldn’t know when our body was damaged, because we wouldn’t feel pain. We might freeze to death without even a shake, or overheat without a drop of sweat. The five senses--touch, taste, smell, hearing and sight--respond only to stimulation from the out- side world, but the inside world of our bodies must also receive and respond to important messages.
Our internal senses keep us alive and enable us to use our external senses. In effect, the internal senses tell our brains how to run our bodies. Hunger and thirst register in a part of the brain called the hypothalamus, when a lack of food chemicals are detected in the blood.
Another internal sense that controls our ba
A. in fact
B. it is doubtful
C. without reason
D. often

Passage Four If we had to rely on only five senses for survival, we would be in very sad shape indeed. We wouldn’t know up from down. We wouldn’t know when to eat or drink. We wouldn’t know what our muscles were doing or what position our limbs were in. We wouldn’t know when our body was damaged, because we wouldn’t feel pain. We might freeze to death without even a shake, or overheat without a drop of sweat. The five senses--touch, taste, smell, hearing and sight--respond only to stimulation from the out- side world, but the inside world of our bodies must also receive and respond to important messages. Our internal senses keep us alive and enable us to use our external senses. In effect, the internal senses tell our brains how to run our bodies. Hunger and thirst register in a part of the brain called the hypothalamus, when a lack of food chemicals are detected in the blood. Another internal sense that controls our balance is maintained by t
A. can use only in emergencies
B. may not understand at present
C. never realize we have
D. do not actively use in everyday living

Passage Four
Bond had walked for only a few minutes when it suddenly occurred to him that he was being followed. There was no evidence for it except a slight tingling(隐隐作痛) of the scalp(头皮) and an extra awareness of the people near him, but he had faith in his sixth sense and he at once stopped in front of the shop window he was passing and looked casually back along 46th Street. Nothing but a lot of miscellaneous people moving slowly on the sidewalks, mostly on the same side as himself, the side that was sheltered from the sun. There was no sudden movement into a doorway, nobody casually wiping his face with a handkerchief to avoid recognition, nobody bending down to tie a shoelace.
Bond examined the Swiss watches in his shop window and then turned and sauntered on. After a few yards he stopped again. Still nothing. He went on and turned fight into the Avenue of the Americans, stopping in the first doorway, the entrance to a women’s underwear
A. most people on the sidewalk were on the same side as himself
B. no one suddenly turned into a doorway
C. a man was looking into the windows of a store
D. no one wiped his face with a handkerchief