更多"Her mother is a teacher. Her sister"的相关试题:
[填空题]Her mother is a teacher. Her sister is a teacher too.
______ her mother and her Sister are teachers.
[填空题]Her mother is a teacher. Her sister is a teacher, too.
______ her mother and her sister axe teachers.
[填空题]Emma told her mother that her father got heart attack and collapsed in his doing the new project.
[填空题]The mother fixed her eyes on her son with deep feelings, ______ (希望他能读懂她对他的爱).
[填空题]
What does the speaker think of her mother?
Her mother is the () person to her.
[单项选择]Passage 3
If a mother pushes her small son in a swing, giving only a light force each time he returns, eventually he will be swinging quite high. The child can do this for himself by using his legs to increase the motion, but both the mother’s push and the child’s leg movements must occur at the proper moment, or the extent of the swing will not increase. In physics, increasing the swing is increasing the amplitude; the length of the rope on the swing determines its natural oscillation period. This ability of an object to move periodically or to vibrate when stimulated by a force operating in its natural period is called resonance.
Resonance is observed many times without consciously thinking about it; for example, one may find an annoying vibration or shimmy in an automobile, caused by a loose engine mount vibrating with increasing amplitude because of an out-of-round tire. The bulge on the tire slaps the pavement with each revolution; at the natural resonance point of t
A. vibrate
B. resonate
C. swing
D. oscillate
[单项选择]What does the mother ask her son to do
A. It’s near the park.
B. It’s under a tree.
C. It’s outside the park.