The mining industry in the U.S. became safer after the late 1960s because
A. the U.S. Senate passed laws requiring federal mine inspections.
B. the U.S. Congress passed laws requiring federal mine inspections.
C. the U.S.health and safety officials passed laws requiring federal mine inspections.
D. the U.S. mine companies passed laws requiring federal mine inspections.
查看答案
What is the speaker mainly talking about？
A. How animals survive harsh conditions in the wild.
B. How animals alter colors to match their surroundings.
C. How animals protect themselves against predators.
D. Flow animals learn to disguise themselves effectively.
The man is surprised at the fact that
A. the sound of drilling is painful.
B. the woman has to have her tooth refilled.
C. teeth cannot be transplanted.
D. people can transplant hearts.
Which of the following statements is CORRECT about the running of the typical Italian family restaurant in the United States？
A. The couple cook the dishes and the children help them.
B. The husband does the cooking and the wife serves as the waitress.
C. The mother does the cooking while the father and children wait on the guests.
D. A hired cook prepares the dishes and the family members serve the guests.
正确答案是（）
A. concept
B. dimension
C. effect
D. perspective
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