One of the most widely discussed problems of recent years has centered around ______ has come to be called the "generation gap".
A. that
B. what
C. which
D. how
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You are advised to get up leisurely because it will______.
A. help to keep your energy for the day's work
B. help you to control your temper early in the day
C. enable you to concentrate on your routine work
D. keep your energy cycle under control all day
What type of eyes are found in the crab？
A. Electronic eyes.
B. Insect-shaped eyes.
Compound eyes.
D. Complicated eyes.
Don't______too much on your past failures, think of the future.
A. dwell
B. depend
C. build
D. rely
Which of the following may lead to family quarrels according to the Passage？
A. Unawareness of family members' energy cycles.
B. Familiar monologues.
C. A change in a family member's energy cycle.
D. Attempts to control the energy cycle of other family members.
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