根据斜面的道理,我们可以得出结论,螺旋的杆子越(),螺距越小越省力。
A、粗
B、细
C、长
D、短
参考答案:A
Read and write. (仿照例子写句子)
例:Do you like apples? Yes, I do. (bananas)
Do you like bananas? Yes, I'do.
1. — Where is my book?
一 It's on the desk. (umbrella, in)
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2. — Can I use your ruler?
— Yes. Here you are. (bike )
3. — How many rabbits can you see?
一 I can see five. (snakes, twelve)
胆石症病人可出现
A.辗转体位
B.强迫停立位
C.角弓反张位
D.强迫蹲位
E.强迫侧卧位