力的作用是使物体产生()和(),这就是力的效应,前者为(),后者为()。
参考答案:加速度、形变、外效应、内效应
Read and choose. (读短文,选择最佳选项)
Here's my family photo. This woman is my grandma. She is short. She likes watermelons. That
tall man is my grandpa. He has long arms. The man behind my grandma is my father. His eyes are
big My mom is a beautiful woman. She has long hair. The little girl is me.
1. There are _____ people in my family.
A. five
B. six
C. seven
2. My grandma is a _____ woman.
A. tall
B. short
C. beautiful
3. My grandpa has long _____.
A. hairs
B. ears
C. arms
4. My father is _____ my grandmother.
A. in
B. on
C. behind
5. My father has _____ eyes.
A. small
B. big
C. long
"非指导性"教学模式的倡导者是美国的罗杰斯。